code: @Override
  	protected void postToJSON(DeviceRegistration from, JSONObject to) throws JSONException {
  		to.put("gcm_registration_id", from.getRegistrationId());
  		to.put("device_type", "Android");
  		to.put("service_type", "ANDROID_GCM");
  	}
docs: /* (non-Javadoc)
  @see com.socialize.entity.SocializeObjectFactory#postToJSON(com.socialize.entity.SocializeObject, org.json.JSONObject)