In the Tableau Server administration views you can review actions performed by a specific user. Narrow the view down to the specific user name in question to view the specific data to that user.
More information; Actions by Specific User
Hope this helps!
Thanks for your reply. Under actions by specific user, I see list of actions like, Login, Publish Workbook, Download Workbook & Access View. It doesn't have an action like Download Full Data or Summary Data, which is different from Download Workbook & Data Sources.
When a user Downloads Full Data or Summary Data it comes under Access View, but Access View could mean different activities.
Please let me know if you have any idea how to figure that out.