A file was changed
Compatibility: RTM Events API
file_change event is sent when any property of a file is changed. It is
sent to all connected clients for all users that have permission to see the
file property includes the file ID, as well as a top-level
file_id. To obtain additional information about the file, use the
files.info API method.
Events API compatibility
Subscribe to this event via the Events API.
Events of this type will be wrapped in metadata when sent via the Events API.