// FCM
		$optionBuiler = new OptionsBuilder();
		$optionBuiler->setTimeToLive(60*20);

		$notificationBuilder = new PayloadNotificationBuilder($title);
		$notificationBuilder->setTitle($title)
		                    ->setBody($s_msg)
		                    // ->setSound('sound')
		                    ->setBadge($badge);

		$dataBuilder = new PayloadDataBuilder();
		$dataBuilder->addData([ 'u' => $user_id1,
								'i' => $item_id,
								't' => $trade_id,
								'm' => $message_id,
								's_msg' => $s_msg,
								'type' => $type,
								'badge' => $badge
							]);


		$option = $optionBuiler->build();
		$notification = $notificationBuilder->build();
		$data = $dataBuilder->build();

		// $token = $user_data->device_token_android;

		$downstreamResponse = FCM::sendTo($device_token_android, $option, null, $data);

		$downstreamResponse->numberSuccess();
		$downstreamResponse->numberFailure();
		$downstreamResponse->numberModification();

		//return Array - you must remove all this tokens in your database
		$downstreamResponse->tokensToDelete();

		//return Array (key : oldToken, value : new token - you must change the token in your database )
		$downstreamResponse->tokensToModify();

		//return Array - you should try to resend the message to the tokens in the array
		$downstreamResponse->tokensToRetry();