Slack Event Source + /slash commands default response

[spire-ffoston]

Hi all,

I've been playing around with building a Slack bot using Argo Events, so far it's going great but I've hit a small aesthetic issue. All slash commands that are succesfully delivered to my event-source display the following message:

Is there a way to supress this automatic 'success` output? It appears to be a result of slack converting the 200 response from the slack event-source to text which is not ideal ( as detailed here https://api.slack.com/interactivity/slash-commands#responding_basic_receipt).

This seems to only be an issue with slash commands - other event types do not exhibit this behaviour.