Retrieve the current signing secret if you've lost it. Use this instead of rotating when you just need to re-copy the value. The secret doesn't change, and every call is recorded in the audit log.

Prerequisites: a Partner bearer token and the subscription's id (from List your webhooks).

Authentication: Partner token. Only partner users can call it; other tokens get 403. Only your own partner's subscriptions: any other id gets 404.

Rate limit: none.