The standard MQTT uplink message format is :
Q1: Can we modify this to conform to Brick or Haystack tagging ontology (http://vcharpenay.github.io/hto/doc.htm)
Even if we could configure a sensor to have an alias MQTT topic that conforms to this haystack (or other) format
Q2: If the above is NOT available if I had a private TTN Server, can I modify the source to make it do the above in Q1?
I look forward to your replies