I like 'event' because it implies an action in time; and because signing is a performance, this is correct. As such an event implies it carriers its own context of actor(s) and time; which is also correct. Event is the correct term, and as is always true, Dutch does it better, naming it: Gebeurtenis

These are the only events I like because events in real life makes me anxious.

notes and events transmitted by relays NETR