I propose, as recommended by stian, that all admin activities (edited/modified) shall be logged in other than just user related admin events.

User related events will continue to be logged in all cases as is currently.
In addition,  
#1. We can simply log in all other activities too by admin. 
OR 
#2. Provide an option (on/off) for the admin to choose if he wishes to log in all other admin events too.

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Giriraj Sharma, 
Department of Computer Science 
National Institute of Technology Hamirpur 
Himachal Pradesh, India 177005