diff --git a/contrib/screener-api/client/client.go b/contrib/screener-api/client/client.go
index 48e438175f..c5f0e70811 100644
--- a/contrib/screener-api/client/client.go
+++ b/contrib/screener-api/client/client.go
@@ -6,6 +6,7 @@ import (
 	"crypto/hmac"
 	"crypto/sha256"
 	"encoding/hex"
+	"encoding/json"
 	"fmt"
 	"strings"
 	"time"
@@ -17,11 +18,6 @@ import (
 	"github.com/synapsecns/sanguine/core/metrics"
 )
 
-var (
-	// BlacklistEndpoint is the endpoint for blacklisting an address.
-	BlacklistEndpoint = "/api/data/sync/"
-)
-
 // ScreenerClient is an interface for the Screener API.
 type ScreenerClient interface {
 	ScreenAddress(ctx context.Context, ruleset, address string) (blocked bool, err error)
@@ -69,7 +65,7 @@ func (c clientImpl) ScreenAddress(ctx context.Context, ruleset, address string)
 
 // BlackListBody is the json payload that represents a blacklisted address.
 type BlackListBody struct {
-	TypeReq string `json:"typereq"`
+	Type    string `json:"type"`
 	ID      string `json:"id"`
 	Data    string `json:"data"`
 	Address string `json:"address"`
@@ -90,19 +86,27 @@ func (c clientImpl) BlacklistAddress(ctx context.Context, appsecret string, appi
 	timestamp := fmt.Sprintf("%d", time.Now().Unix())
 	queryString := ""
 
-	signature := GenerateSignature(appsecret, appid, timestamp, nonce, queryString, body)
+	bodyBz, err := json.Marshal(body)
+	if err != nil {
+		return "", fmt.Errorf("error marshaling body: %w", err)
+	}
+
+	message := fmt.Sprintf("%s%s%s%s%s%s%s",
+		appid, timestamp, nonce, "POST", "/api/data/sync/", queryString, string(bodyBz))
+
+	signature := GenerateSignature(appsecret, message)
 
 	resp, err := c.rClient.R().
 		SetContext(ctx).
 		SetHeader("Content-Type", "application/json").
-		SetHeader("appid", appid).
-		SetHeader("timestamp", timestamp).
-		SetHeader("nonce", nonce).
-		SetHeader("queryString", queryString).
-		SetHeader("signature", signature).
-		SetResult(&blacklistRes).
+		SetHeader("AppID", appid).
+		SetHeader("Timestamp", timestamp).
+		SetHeader("Nonce", nonce).
+		SetHeader("QueryString", queryString).
+		SetHeader("Signature", signature).
 		SetBody(body).
-		Post(BlacklistEndpoint)
+		SetResult(&blacklistRes).
+		Post("/api/data/sync/")
 
 	if err != nil {
 		return resp.Status(), fmt.Errorf("error from server: %s: %w", resp.String(), err)
@@ -115,6 +119,17 @@ func (c clientImpl) BlacklistAddress(ctx context.Context, appsecret string, appi
 	return blacklistRes.Status, nil
 }
 
+// GenerateSignature generates a signature for the request.
+func GenerateSignature(
+	secret,
+	message string,
+) string {
+	key := []byte(secret)
+	h := hmac.New(sha256.New, key)
+	h.Write([]byte(message))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
 // NewNoOpClient creates a new no-op client for the Screener API.
 // it returns false for every address.
 func NewNoOpClient() (ScreenerClient, error) {
@@ -131,32 +146,4 @@ func (n noOpClient) BlacklistAddress(_ context.Context, _ string, _ string, _ Bl
 	return "", nil
 }
 
-// GenerateSignature generates a signature for the request.
-func GenerateSignature(secret string,
-	appid string,
-	timestamp string,
-	nonce string,
-	queryString string,
-	body BlackListBody,
-) string {
-	key := []byte(secret)
-
-	// Concatenate the body.
-	message := fmt.Sprintf(
-		"%s%s%s%s%s%s%s",
-		appid,
-		timestamp,
-		nonce,
-		"POST",
-		BlacklistEndpoint,
-		queryString,
-		body,
-	)
-
-	h := hmac.New(sha256.New, key)
-	h.Write([]byte(message))
-
-	return strings.ToLower(hex.EncodeToString(h.Sum(nil)))
-}
-
 var _ ScreenerClient = noOpClient{}
diff --git a/contrib/screener-api/db/db_test.go b/contrib/screener-api/db/db_test.go
index 05eaabcaa3..bf93dfef85 100644
--- a/contrib/screener-api/db/db_test.go
+++ b/contrib/screener-api/db/db_test.go
@@ -72,7 +72,7 @@ func (d *DBSuite) TestBlacklist() {
 		testAddress := gofakeit.BitcoinAddress()
 
 		blacklistBody := db.BlacklistedAddress{
-			TypeReq: "create",
+			Type:    "create",
 			ID:      "testId",
 			Address: testAddress,
 			Network: "bitcoin",
@@ -88,7 +88,7 @@ func (d *DBSuite) TestBlacklist() {
 		d.Require().NotNil(blacklistedAddress)
 
 		// update the address
-		blacklistBody.TypeReq = "update"
+		blacklistBody.Type = "update"
 		blacklistBody.Remark = "testRemarkUpdated"
 		err = testDB.UpdateBlacklistedAddress(d.GetTestContext(), blacklistBody.ID, blacklistBody)
 		d.Require().NoError(err)
diff --git a/contrib/screener-api/db/models.go b/contrib/screener-api/db/models.go
index bcc89e3f4c..383bce26fd 100644
--- a/contrib/screener-api/db/models.go
+++ b/contrib/screener-api/db/models.go
@@ -20,7 +20,7 @@ type BlacklistedAddress struct {
 	CreatedAt time.Time `json:"createdAt"`
 	UpdatedAt time.Time `json:"updatedAt"`
 
-	TypeReq string `gorm:"column:typereq"        json:"typereq"`
+	Type    string `gorm:"column:type"           json:"type"`
 	ID      string `gorm:"column:id;primary_key" json:"id"`
 	Data    string `gorm:"column:data"           json:"data"`
 	Address string `gorm:"column:address"        json:"address"`
diff --git a/contrib/screener-api/db/sql/base/base.go b/contrib/screener-api/db/sql/base/base.go
index 91e9fca664..747e9b92bc 100644
--- a/contrib/screener-api/db/sql/base/base.go
+++ b/contrib/screener-api/db/sql/base/base.go
@@ -60,7 +60,7 @@ func (s *Store) PutBlacklistedAddress(ctx context.Context, body db.BlacklistedAd
 				{Name: idName},
 			},
 			DoUpdates: clause.AssignmentColumns([]string{
-				idName, typeReqName, dataName, addressName, networkName, tagName, remarkName},
+				idName, typeName, dataName, addressName, networkName, tagName, remarkName},
 			),
 		}).Create(&body)
 	if dbTx.Error != nil {
diff --git a/contrib/screener-api/db/sql/base/namer.go b/contrib/screener-api/db/sql/base/namer.go
index 7d305d7052..302873c27d 100644
--- a/contrib/screener-api/db/sql/base/namer.go
+++ b/contrib/screener-api/db/sql/base/namer.go
@@ -10,7 +10,7 @@ func init() {
 	addressName = namer.GetConsistentName("Address")
 	indicatorName = namer.GetConsistentName("Indicators")
 
-	typeReqName = namer.GetConsistentName("TypeReq")
+	typeName = namer.GetConsistentName("Type")
 	idName = namer.GetConsistentName("ID")
 	dataName = namer.GetConsistentName("Data")
 	networkName = namer.GetConsistentName("Network")
@@ -22,7 +22,7 @@ var (
 	addressName   string
 	indicatorName string
 
-	typeReqName string
+	typeName    string
 	idName      string
 	dataName    string
 	networkName string
diff --git a/contrib/screener-api/docs/docs.go b/contrib/screener-api/docs/docs.go
index ec00e7b428..752cecc4c9 100644
--- a/contrib/screener-api/docs/docs.go
+++ b/contrib/screener-api/docs/docs.go
@@ -160,7 +160,7 @@ const docTemplate = `{
                 "tag": {
                     "type": "string"
                 },
-                "typereq": {
+                "type": {
                     "type": "string"
                 },
                 "updatedAt": {
diff --git a/contrib/screener-api/docs/swagger.json b/contrib/screener-api/docs/swagger.json
index ef9bf8b0e5..5132742779 100644
--- a/contrib/screener-api/docs/swagger.json
+++ b/contrib/screener-api/docs/swagger.json
@@ -149,7 +149,7 @@
                 "tag": {
                     "type": "string"
                 },
-                "typereq": {
+                "type": {
                     "type": "string"
                 },
                 "updatedAt": {
diff --git a/contrib/screener-api/docs/swagger.yaml b/contrib/screener-api/docs/swagger.yaml
index aa75918ffc..9d108f9ce2 100644
--- a/contrib/screener-api/docs/swagger.yaml
+++ b/contrib/screener-api/docs/swagger.yaml
@@ -15,7 +15,7 @@ definitions:
         type: string
       tag:
         type: string
-      typereq:
+      type:
         type: string
       updatedAt:
         type: string
diff --git a/contrib/screener-api/screener/screener.go b/contrib/screener-api/screener/screener.go
index 33b2bba172..e262066b96 100644
--- a/contrib/screener-api/screener/screener.go
+++ b/contrib/screener-api/screener/screener.go
@@ -6,6 +6,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"io"
 	"net/http"
 	"strings"
 	"sync"
@@ -94,7 +95,6 @@ func NewScreener(ctx context.Context, cfg config.Config, metricHandler metrics.H
 	screener.router.Handle(http.MethodGet, "/:ruleset/address/:address", screener.screenAddress)
 
 	screener.router.Handle(http.MethodPost, "/api/data/sync", screener.authMiddleware(cfg), screener.blacklistAddress)
-
 	screener.router.GET("/swagger/*any", ginSwagger.WrapHandler(swaggerfiles.Handler))
 
 	return &screener, nil
@@ -159,7 +159,7 @@ func (s *screenerImpl) blacklistAddress(c *gin.Context) {
 		return
 	}
 
-	span.SetAttributes(attribute.String("type", blacklistBody.TypeReq))
+	span.SetAttributes(attribute.String("type", blacklistBody.Type))
 	span.SetAttributes(attribute.String("id", blacklistBody.ID))
 	span.SetAttributes(attribute.String("data", blacklistBody.Data))
 	span.SetAttributes(attribute.String("network", blacklistBody.Network))
@@ -168,7 +168,7 @@ func (s *screenerImpl) blacklistAddress(c *gin.Context) {
 	span.SetAttributes(attribute.String("address", blacklistBody.Address))
 
 	blacklistedAddress := db.BlacklistedAddress{
-		TypeReq: blacklistBody.TypeReq,
+		Type:    blacklistBody.Type,
 		ID:      blacklistBody.ID,
 		Data:    blacklistBody.Data,
 		Network: blacklistBody.Network,
@@ -177,7 +177,7 @@ func (s *screenerImpl) blacklistAddress(c *gin.Context) {
 		Address: strings.ToLower(blacklistBody.Address),
 	}
 
-	switch blacklistBody.TypeReq {
+	switch blacklistBody.Type {
 	case "create":
 		if err := s.db.PutBlacklistedAddress(ctx, blacklistedAddress); err != nil {
 			span.AddEvent("error", trace.WithAttributes(attribute.String("error", err.Error())))
@@ -185,28 +185,34 @@ func (s *screenerImpl) blacklistAddress(c *gin.Context) {
 			return
 		}
 
+		span.AddEvent("blacklistedAddress", trace.WithAttributes(attribute.String("address", blacklistBody.Address)))
 		c.JSON(http.StatusOK, gin.H{"status": "success"})
 		return
 
 	case "update":
-		if err := s.db.UpdateBlacklistedAddress(c, blacklistedAddress.ID, blacklistedAddress); err != nil {
+		if err := s.db.UpdateBlacklistedAddress(ctx, blacklistedAddress.ID, blacklistedAddress); err != nil {
+			span.AddEvent("error", trace.WithAttributes(attribute.String("error", err.Error())))
 			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 			return
 		}
 
+		span.AddEvent("blacklistedAddress", trace.WithAttributes(attribute.String("address", blacklistBody.Address)))
 		c.JSON(http.StatusOK, gin.H{"status": "success"})
 		return
 
 	case "delete":
-		if err := s.db.DeleteBlacklistedAddress(c, blacklistedAddress.Address); err != nil {
+		if err := s.db.DeleteBlacklistedAddress(ctx, blacklistedAddress.Address); err != nil {
+			span.AddEvent("error", trace.WithAttributes(attribute.String("error", err.Error())))
 			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 			return
 		}
 
+		span.AddEvent("blacklistedAddress", trace.WithAttributes(attribute.String("address", blacklistBody.Address)))
 		c.JSON(http.StatusOK, gin.H{"status": "success"})
 		return
 
 	default:
+		span.AddEvent("error", trace.WithAttributes(attribute.String("error", err.Error())))
 		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid type"})
 		return
 	}
@@ -216,34 +222,45 @@ func (s *screenerImpl) blacklistAddress(c *gin.Context) {
 // compare it with the signature provided. If they match, the request is allowed to pass through.
 func (s *screenerImpl) authMiddleware(cfg config.Config) gin.HandlerFunc {
 	return func(c *gin.Context) {
-		var blacklistBody client.BlackListBody
+		_, span := s.metrics.Tracer().Start(c.Request.Context(), "authMiddleware")
+		defer span.End()
 
-		if err := c.ShouldBindBodyWith(&blacklistBody, binding.JSON); err != nil {
-			c.JSON(http.StatusBadGateway, gin.H{"error": err.Error()})
-			c.Abort()
-			return
-		}
+		appID := c.Request.Header.Get("AppID")
+		timestamp := c.Request.Header.Get("Timestamp")
+		nonce := c.Request.Header.Get("Nonce")
+		signature := c.Request.Header.Get("Signature")
+		queryString := c.Request.Header.Get("QueryString")
+		bodyBytes, _ := io.ReadAll(c.Request.Body)
+		bodyStr := string(bodyBytes)
 
-		appid := cfg.AppID
-		appsecret := cfg.AppSecret
+		c.Request.Body = io.NopCloser(strings.NewReader(bodyStr))
 
-		nonce := c.GetHeader("nonce")
-		timestamp := c.GetHeader("timestamp")
-		queryString := c.GetHeader("queryString")
-		if nonce == "" || timestamp == "" || appid == "" {
-			c.JSON(http.StatusConflict, gin.H{"error": "missing headers"})
-			c.Abort()
-			return
-		}
+		span.SetAttributes(
+			attribute.String("appId", appID),
+			attribute.String("timestamp", timestamp),
+			attribute.String("nonce", nonce),
+			attribute.String("signature", signature),
+			attribute.String("queryString", queryString),
+			attribute.String("bodyString", bodyStr),
+		)
+
+		message := fmt.Sprintf("%s%s%s%s%s%s%s",
+			appID, timestamp, nonce, "POST", "/api/data/sync/", queryString, bodyStr)
 
-		// reconstruct signature
-		expected := client.GenerateSignature(appsecret, appid, timestamp, nonce, queryString, blacklistBody)
+		span.AddEvent("message", trace.WithAttributes(attribute.String("message", message)))
 
-		if c.GetHeader("Signature") != expected {
-			c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
+		expectedSignature := client.GenerateSignature(cfg.AppSecret, message)
+
+		span.AddEvent("generated_signature", trace.WithAttributes(attribute.String("expectedSignature", expectedSignature)))
+
+		if expectedSignature != signature {
+			span.AddEvent("error", trace.WithAttributes(attribute.String("error", "Invalid signature")))
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid signature"})
 			c.Abort()
 			return
 		}
+
+		span.AddEvent("signature_validated")
 		c.Next()
 	}
 }
diff --git a/contrib/screener-api/screener/suite_test.go b/contrib/screener-api/screener/suite_test.go
index aa759d400e..7be0ee3bc1 100644
--- a/contrib/screener-api/screener/suite_test.go
+++ b/contrib/screener-api/screener/suite_test.go
@@ -80,7 +80,7 @@ func (s *ScreenerSuite) TestScreener() {
 	s.T().Setenv("TRM_URL", "")
 
 	cfg := config.Config{
-		AppSecret: "appsecret",
+		AppSecret: "secret",
 		AppID:     "appid",
 		TRMKey:    "",
 		Rulesets: map[string]config.RulesetConfig{
@@ -155,7 +155,7 @@ func (s *ScreenerSuite) TestScreener() {
 
 	// now test crud screener
 	blacklistBody := client.BlackListBody{
-		TypeReq: "create",
+		Type:    "create",
 		ID:      "1",
 		Data:    "{\"test\":\"data\"}",
 		Address: "0x123",
@@ -166,27 +166,31 @@ func (s *ScreenerSuite) TestScreener() {
 
 	// post to the blacklist
 	status, err := apiClient.BlacklistAddress(s.GetTestContext(), cfg.AppSecret, cfg.AppID, blacklistBody)
+	fmt.Println(status)
 	Equal(s.T(), "success", status)
 	Nil(s.T(), err)
 
 	// update an address on the blacklist
-	blacklistBody.TypeReq = "update"
+	blacklistBody.Type = "update"
 	blacklistBody.Remark = "new remark"
 
 	status, err = apiClient.BlacklistAddress(s.GetTestContext(), cfg.AppSecret, cfg.AppID, blacklistBody)
+	fmt.Println(status)
 	Equal(s.T(), "success", status)
 	Nil(s.T(), err)
 
 	// delete the address on the blacklist
-	blacklistBody.TypeReq = "delete"
+	blacklistBody.Type = "delete"
 	blacklistBody.ID = "1"
 
 	status, err = apiClient.BlacklistAddress(s.GetTestContext(), cfg.AppSecret, cfg.AppID, blacklistBody)
+	fmt.Println(status)
 	Equal(s.T(), "success", status)
 	Nil(s.T(), err)
 
 	// unauthorized
 	status, err = apiClient.BlacklistAddress(s.GetTestContext(), "bad", cfg.AppID, blacklistBody)
+	fmt.Println(status)
 	NotEqual(s.T(), "success", status)
 	NotNil(s.T(), err)
 }