Steps to reproduce:
1. Add some activity on your env (.ie https://github.com/ibexa/test-fixtures can be used, or migration which creates a lot of users)
2. Go to 'Recent activity'
3. Observe row with information regarding users

Actual result:
Only provided information is: *Administrator User
create* which is vague at least.

Expected result:
Clear information regarding what happened to user (.ie Administrator User created <user> in <user group>)