[esp-zigbee-sdk] How to change a Device attribute via Coordinator

[cassianocampes]

I am checking the examples found in the esp-zigbee-sdk, but I could not find one that matches what I am trying to do.

So, basically, I want to be able to have the Zigbee Coordinator change an attribute from a specific Device but I am not sure how to do that.
The ultimate idea is to have the Zigbee Coordinator receiving MQTT messages over the Internet, and then translating these MQTT messages into Attribute updates to the particular Device.

The other way around is fine, the Device updates the attributes, and I can see via the Zigbee Coordinator the changes.