docs: def on_request(self, msg):
          """
          message consumed treatment through provided callback and basic ack
          """
          LOGGER.debug("natsd.Service.on_request - request " + str(msg) + " received")
          try:
              working_response = json.loads(msg.data.decode())
              working_properties = DriverTools.json2properties(working_response['properties'])
              working_body = b''+bytes(working_response['body'], 'utf8') if 'body' in working_response else None
              working_body_decoded = base64.b64decode(working_body) if working_body is not None else \
                  bytes(json.dumps({}), 'utf8')
              self.cb(working_properties, working_body_decoded)
          except Exception as e:
              LOGGER.warn("natsd.Service.on_request - Exception raised while treating msg {"+str(msg)+","+str(msg)+"}")
          LOGGER.debug("natsd.Service.on_request - request " + str(msg) + " treated")