RF433 > MQTT > Action

This should be solution for 433MHz motion sensor which should trigger the alarm. It seems like the best solution will be RF to MQTT. Does anybody use this with Raspberry?
Raspberry+RF433 receiver (not sender) on GPIO+motion sensor sending single RF code+gpio to mqtt converter+soem automation to push message to mobile phone or trigger sirene etc.

THANK YOU VERY MUCH (it seems nobody in the whole world never realize this with success?)