code: def serialize(self):
          
          return {
              "uuid": self.uuid, "type": self.type, "instance_id": self.instance_id,
              "prepared": self.prepared, "creation_time": self.creation_time,
              "data": self.data
          }
docs: This function serialize into a simple dict object.
          It is used when transferring data to other daemons over the network (http)
  
          Here we directly return all attributes
  
          :return: json representation of a Brok
          :rtype: dict