OrgEventComment
A comment on an event.
idrequiredinteger- The comment id.
parent_idrequiredinteger | null- The comment this one answers. Null for a top-level comment.
contentrequiredstring- The comment text, up to 150 characters.
created_atrequiredstring (date-time)- When the comment was written.
updated_atrequiredstring | null (date-time)- When the comment last changed.