MQTT subscribe help needed

[hiteshpratyushv]

Hi I am working on an ESP32 to create a Gatts-Mqtt gateway. My publish part is working but I am unable to figure out the subscribe part.I am able to subscribe to the topic but I am unable to recieve message so it doesn't send back an ack so my broker keeps publishing it the message multiple times

ESP_LOGI(MQTT_TAG, "MQTTSubscribe  ...");
	ret = MQTTSubscribe(&client, "test/topic", QOS1, mqtt_message_handler);
	if (ret != SUCCESS) {
		ESP_LOGI(MQTT_TAG, "MQTTSubscribe: %d", ret);
	}

This is my subscribe code where mqtt_message_handler just prints it out in the LOG.
Please help.