Looks up a session.
Unique Session identifier
OK
{"session_variables": { },"user_id": "UU0123456789ABCD","sessions": [{"expiryDate": "2018-11-15 14:29 PM UTC","startDate": "2017-11-15 14:29 PM UTC","authenticated": true,"session_id": "SS0123456789ABCD","user_id": "UU0123456789ABCD"}]}