Running a subscription on Tasmot for ESP8266, DS18B20 and chip with I2C

Hello, I have a thermometer on ESP8266 and DS18B20. It works on tasmot. This chip publishes the temperature nicely to me via MQTT on a public IP.
On another chip, also built on ESP and display on I2C, also with tasmot, I would like to display the temperature read from the sensor. Both circuits are of course on different networks. How do I start a subscription on the tasmot?

I came to the fact that typing in the console On the display in two lines of 16 characters scrolls different data, from all devices that have the same broker address entered, which I have in the tasmot on which the device with the display works. That is, this data is sent to my ESP to which the display is connected. Now please suggest how to display only what I am interested in.