The text is part of a message that is a response to a CONTROL GETSPOOLFILE message from the manager. From AutoSys, that would probably be the response to an "autosyslog -TA" command. The FileSize parameter is the size of the joblog file in the agent spool directory. The Lengths are the lengths of each line in the file. The data is sent without line endings, so the Lengths allows AutoSys to add the line endings that are appropriate for the machine requesting the information.