|An agent joins an event/group with participants/friends at a location.|
- RegisterAction: Unlike RegisterAction, JoinAction refers to joining a group/team of people.
- SubscribeAction: Unlike SubscribeAction, JoinAction does not imply that you’ll be receiving updates.
- FollowAction: Unlike FollowAction, JoinAction does not imply that you’ll be polling for updates.
|InteractAction||actionStatus, additionalType, agent, alternateName, description, disambiguatingDescription, endTime, error, event, identifier, image, instrument, location, mainEntityOfPage, name, object, participant, potentialAction, result, sameAs, startTime, subjectOf, target, url|