Channel Point Redemption EventSub Problem

[BarryCarlyon]

@LVTHS

        if message_type == "webhook_callback_verification":
            challenge = body["challenge"]
            print("Received webhook_callback_verification, responding with challenge:", challenge)
            return JSONResponse(content={"challenge": challenge})

This is incorrect.

You need to response with plain text. Not a JSON blob

You cat test this usign the Twitch CLI with the twitch event verify-subscription test - https://github.com/twitchdev/twitch-cli/blob/main/docs/event.md#verify-subscription