WireMock

Hi, a couple of things jump out - In the examples, the `url` for the webhook is a fully qualified url so might be worth providing the full url if you can.  The examples I was looking at are here - <https://wiremock.org/3.x/docs/webhooks-and-callbacks/>

Also, you have a `response` element with the `jsonBody` element within it.  I am not sure that is needed/allowed in the webhook postServeAction

Also, the API I help build at work uses callbacks quite extensively (I used the same setup as you for some local testing we were doing using Wiremock and the webhook extension)   I put together a little utility to allow us to get some visibility of those callbacks.  I used it when I was setting up the callbacks from wiremock. Might be useful here - <https://github.com/leeturner/callback-logger>