IR Blaster Automation

Hi All,

I’m trying to setup my IR blaster to turn on the soundbar when i turn on the TV. With the remote i can capture the IR code on the device page in zigbee2mqtt.
When on that same page i put the code in the “IR code to send” field and lieve the field it works.

When trying to make an automation with it; it doesn’t.
I’ve got the following:

in YAML:

service: mqtt.publish
data:
  qos: "0"
  retain: false
  topic: zigbee2mqtt/irblasterwk/set
  payload: >-
    {"ir_code_to_send":
    C4YJTALgBEwClAJMAkAHQAHAB0ABQBfgAwNAG0ADgAEBtFTgFz/gBwFAO0ADgFPgAT9AAUAXQAFABwGUAuAFA8ABQBtAA4AB4BE/wAFAR0ABQAdAA0A7QANACwFMAuABP0APQBdAAcAH4AsBQBsJ4ARMAkwCTAKUAg==}