docs/data/reusables/webhooks/check_run_properties.md

Key	Type	Description
action	string	The action performed. Can be one of: created - A new check run was created. completed - The status of the check run is completed. rerequested - Someone requested to re-run your check run from the pull request UI. See "About status checks" for more details about the GitHub UI. When you receive a rerequested action, you'll need to create a new check run. Only the {% data variables.product.prodname_github_app %} that someone requests to re-run the check will receive the rerequested payload. requested_action - Someone requested an action your app provides to be taken. Only the {% data variables.product.prodname_github_app %} someone requests to perform an action will receive the requested_action payload. To learn more about check runs and requested actions, see "Check runs and requested actions."
check_run	object	The check_run.
check_run[status]	string	The current status of the check run. Can be queued, in_progress, or completed.
check_run[conclusion]	string	The result of the completed check run. Can be one of success, failure, neutral, cancelled, timed_out, action_required or stale. This value will be null until the check run has completed.
check_run[name]	string	The name of the check run.
check_run[check_suite][id]	integer	The id of the check suite that this check run is part of.
check_run[check_suite][pull_requests]	array	An array of pull requests that match this check suite. A pull request matches a check suite if they have the same head_branch. Note: The head_sha of the check suite can differ from the sha of the pull request if subsequent pushes are made into the PR. When the check suite's head_branch is in a forked repository it will be null and the pull_requests array will be empty.
check_run[check_suite][deployment]	object	A deployment to a repository environment. This will only be populated if the check run was created by a {% data variables.product.prodname_actions %} workflow job that references an environment.
requested_action	object	The action requested by the user.
requested_action[identifier]	string	The integrator reference of the action requested by the user.