title: How can i publish taken data from subscribing broker in mqtt mosquitto?
body: <p>I have MQTT Broker (Mosquitto) in different two devices. 
  They are working. I set bridge between them. 
  I can publish data from one to another with pub_mosquitto. 
  I want to get data from any topic in internet broker(broker.hivemq.com) like <a href="http://www.mqtt-dashboard.com/" rel="nofollow noreferrer">http://www.mqtt-dashboard.com/</a><br>
  I can take data from any topic in that website brokers but i can not publish taken data to another my broker at the same time. 
  I want to use my broker pub/sub. 
  My broker will take data from any broker and publish  it to my bridged broker. How can i do this ?</p>
  
  <p>I drew and wrote below:</p>
  
  <p><img src="https://i.stack.imgur.com/62YQ0.jpg" alt="enter image description here"></p>