Basecamp Campfire Integration


First, let me say: GitLab is great! Thank you.

Now, I would love to integrate with Basecamp’s Campfire from GitLab using a webhook.
The request is sent but I get the below error.

Response body:
{"error":"No chat message content found in the request body"}

I have looked online and searched the forums, can’t find a thing on the above.
Somebody must be using Basecamp’s Campfire with GitLab integration?
I don’t want to have to proxy and mangle the request and it doesn’t look like GitLab allows custom headers etc.
Testing with the appropriate header using cURL works!

Any help much appreciated.