Unable to get Added/Removed UserId from a Sharepoint Group using ChangeQuery

I'm using ChangeQuery to get a Sharepoint group membership changes. The changes returned are of type "ChangeGroup".  But it doesn't have "userID" property of the member who was added/removed from the group.

 

Is there any other way to get the userID?

 

Thanks

 

ChangeGroup Class: https://docs.microsoft.com/en-us/previous-versions/office/sharepoint-csom/ee536752(v=office.15)