read json object via mqtt
regarding mosquitto: reference https://mosquitto.org/man/mosquitto_sub-1.html
https://mntolia.com/mqtt-python-with-paho-mqtt-client/
from the terminal run
mosquitto_sub -h test.mosquitto.org -t Moti_IoTTest/# or mosquitto_sub -h test.mosquitto.org -t Moti_IoTTest/'BECKHOFF OFFICE'/TcIotCommunicator/Json/Tx/Data