private void Update()
 {
     if (m_User != null)
     {
         var pos = rootNode.InverseTransformPoint(Camera.main.transform.localPosition);
         var rot = Quaternion.Inverse(rootNode.transform.rotation) * Camera.main.transform.localRotation;
         m_User.SetValue(NetworkUser.k_PositionDataKey, pos, true);
         m_User.SetValue(NetworkUser.k_RotationDataKey, rot, true);
     }
 }