A quick trick to get more info when you are testing different Unified log examples is to use Terminal’s man page lookup feature. This is useful to provide more context to processes that you may not be familiar with. Perhaps you have something interesting in the eventMessage field and want to know more about what processes use that information.
In this example, I “right-clicked” some of the process names to get more information about them; sharingd, bluetoothd, and powerd. However, identifityservicesd does not have a man page so I’ll have to research that one another way!