Setting up webhook - Test button click returns error (400)


I am trying to set up a webhook subscription in my developer account, but when i put in my URL and hit Test button it returns error:
"The test URL returned a failure status (400)"

My URL is https and accessible over the internet. I am able to hit the url using any REST client.
Not sure what's wrong here.



Got it resolved. The api is supposed to expect array, i was just expecting object.


Welcome, @sanjayaswale.

Glad to hear you found a solution!