I'm trying to make a post call to an API using the "Call API" action within Bridge. Unfortunately, every time I try this action, it fails with an "Invalid Payload" response. I've tested the payload in Postman, and it seems to be working correctly.
The API I'm using is a "POST" to a Slack Webhook. (It will automatically post in a specific channel when correctly formatted data is posted to that particular URL.)
I've tried running the body through a Compose String, I've tried pasting it straight into the "HTTP Request Body" field, and I've even tried simplifying it as much as possible, to basically a one word post with no formatting.
Slack Webhook URLs include the auth information in the POST URL, so there is no need to add additional headers.
Screenshot from postman - this works
