post https://{defaultHost}/api/v1/webhooks
This request uses basic authentication with your client_id and client_secret.
To verify the authenticity of the payloads, the secret returned from this
request should be stored and usedto generate a HMAC-SHA-1 hash of the
payloads. The hash should then be compared to the X-Hub-Signature sent by
us in the request header. If the generated hash matches the signature in
the header, it confirms that the payload is valid.