Multifactor events
Every 2fa.* event carries an authenticator on event.object: the multifactor authentication method involved in the event.
See User verification events for the delivery envelope, the fields every event carries, and the full list of 2fa.* event types.
The authenticator resource
Example payload
2fa.complete
New fields may be added to the authenticator resource without a breaking change. Ignore fields you do not recognize rather than rejecting the payload.