-SyncMessageReceived (timestamp<x>, sender<s>, destination<s>, groupId<ay>,message<s>, attachments<as>)::
+SyncMessageReceived (timestamp<x>, sender<s>, destination<s>, groupId<ay>, message<s>, attachments<as>)::
+* timestamp : Integer value that can be used to associate this e.g. with a sendMessage()
+* sender : Phone number of the sender
+* destination : DBus code for destination
+* groupId : Byte array representing the internal group identifier (empty when private message)
+* message : Message text
+* attachments : String array of filenames in the signal-cli storage (~/.local/share/signal-cli/attachments/)
+