Pyhton Script UHF Rfid and Mqtt Raspberry -- 2

Job ID: 39117242

Budget: €30 – €250 EUR

Hello, I need a Python script (Raspberry) that can read an RFID tag with a build rate of 115200 and add it to a desired json file. (blue, red, green, yellow) This Json must be updated automatically when the Raspberry is started. Online server.
This is on the admin side

User:

the RFID has been scanned. the script looks for the ID in all Json, and finds it in "blue". then it sends an Mqtt with "blue" and the id to an Mqtt broker

I would like a finished image without
that I need to change something via ssh or something similar