docs/data/reusables/webhooks/pull_request_thread_properties.md

Key	Type	Description
action	string	The action that was performed. Can be one of: resolved - A comment thread on a pull request was marked as resolved. unresolved - A previously resolved comment thread on a pull request was marked as unresolved.
pull_request	object	The pull request the thread pertains to.
thread	object	The thread that was affected.