I noticed that in the release notes for 11.5 there is now the ability to set up a webhook receiver. The documentation is very limited. It gives you instructions for creating the receiver, which includes specifying the notebook you want the webhook to trigger, a secret (which I think can just be random 32 digit string), an API token (which I assumes means I need to generate a token on Portal and include that) and signature headers (documentation has "x-esrihook-signature,x-hub-signature-256" as an example. This gives me a webhook URL.
I took that webhook URL and used it to set up a webhook on a feature layer (does have edit tracking enabled) and set it to FeatureCreated. My expectation is that the notebook would run after I created a feature, which I don't have any evidence that it ran.
Since the documentation is limited, I am thinking something is not configured correctly either when creating the webhook receiver or with the URL I am setting on the feature service webhook. Is anyone aware of any additional documentation or blog posts about this feature?