I am just testing webhooks between 2 instances of JIRA Cloud - jirasource.atlassian.net and jiradestination.atlassian.net. On JIRA Destination, the webhook url given to me is "https://api-private.atlassian.com/automation/webhooks/jira/a/95xxxx-xxxx" and a secret key which I am passing both to jirasource webhook URL and Secret.
When I create a item in jirasource, nothing happens in jiradestination.
I have tested with curl and it works. So I am assuming the problem is in the way I have configured the jirasource... But the way I did it it just copy/paste of webhook url and secret into the webhook.
It does not work.. I cannot receive a webhook triggered from JIRA it seems.