Task: Receive messages for a MQTT queue

n8n workflow:
{"id":"51","name":"Receive messages for a MQTT queue","nodes":[{"name":"MQTT Trigger","type":"n8n-nodes-base.mqttTrigger","position":[690,260],"parameters":{"options":{}},"credentials":{"mqtt":"mqtt"},"typeVersion":1}],"active":false,"settings":{},"connections":{}}