Command to "restart multiplicity processes" from cli

Occassionally, Multiplicity stops processing all keyboard and mouse input from my main computer that is controlling the others. The only way I can bring it back to life is to remote into the main computer from a secondary, right click the tray icon and select "restart multiplicity processes".

I am looking to be able to run a remote command on the primary machine from a secondary that would do this via the cli. What command do I need to run to invoke the same behavior?

Thanks!