Get a specific user by ID
  GET /users/{userId}    
 GET
 /users/{userId}
 Parameters
Path Parameters
 userId 
 required
   string
ID of the user to retrieve (use ‘whoami’ to get the current user’s details)
Responses
200
User details
403
Forbidden - user lacks permission to read this user
object
 message    
 string
 404
User not found
object
 message    
 string
 500
Internal Server Error
object
 message    
 string