Serial Node problem using Publisher and Subscriber?

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I am new to ROS and I am using Kinetic with Ubuntu Version 16.04. I followed the ROS Publisher and Subscriber tutorial from ROS wiki and I was able to solve for both "custom msg" and for "image" part. Now I want to publish and subscribe in the following manner but could not figure out any way to do it:

1 Published Topic:

uint8_t address 
uint16_t address

N Subscribed Topic:

uint8_t transmission Type (could be enum)
uint8_t address 
uint8_t command 
uint16_t parameter