HTTP Method = PATCH
      Request URI = /api/users/2
       Parameters = {}
          Headers = [Content-Type:"application/json;charset=UTF-8", Authorization:"Basic aXJ0Z2VuZGFhczpFaW4gcGFzc3dvcmQ="]
             Body = {
    "username": "myusername",
    "password": "mynewpassword",
    "oldpassword": "theoldone"
}