How to pause/resume ongoing ffmpeg rtmp stream via python

Question

I have downloaded an audio file and I am streaming it on my client, What I want is when the user click pause button I want to pause the music and similarly resume it, how can I do so via ffmpeg? I am making commands via python and subprocess module to stream the music on my client. Also I have many users at same time and I want to only pause the music which the user requested, I am streaming the music via:

import subprocess
subprocess.run("""ffmpeg -stream_loop -1 -re -i "video.mp4" -c:v copy -c:a aac -ar 44100 -ac 1 -f flv rtmps://dc1-1.rtmp.t.me/s/10909994:xxxxx""")

I dont know a better approach than running subprocess, is there any good workaround to serve different audios to many users at once?