How do I print a single data in paho.mqtt instead of a continuous loop in Python?

Question

How do I print a single data in paho.mqtt instead of a continuous loop in Python?

I want to transfer mqtt data to telegram and report it to grafana from there. But the code below returns data in a continuous loop. I want only one data to come out, then the script to be finished. I replaced the client.loop_forever() with client.loop_start() but there was no output.

import random
import json
from paho.mqtt import client as mqtt_client


broker = '192.168.62.24'
port = 1883
topic = "tvekrani"
# generate client ID with pub prefix randomly
client_id = f'python-mqtt-{random.randint(0, 100)}'
username = 'admin'
password = 'admin'


def connect_mqtt() -> mqtt_client:
    def on_connect(client, userdata, flags, rc):
        if rc == 0:
            a=0
        else:
            print("Failed to connect, return code %d\n", rc)

    client = mqtt_client.Client(client_id)
    # client.username_pw_set(username, password)
    client.on_connect = on_connect
    client.connect(broker, port)
    return client


def subscribe(client: mqtt_client):
    def on_message(client, userdata, msg):
        
        #print(msg.payload.decode())
        data=(msg.payload.decode())

        veri = json.loads(data)
        print(veri["speakers"])
    client.subscribe(topic)
    client.on_message = on_message


def run():
    client = connect_mqtt()
    
    subscribe(client)
   
    client.loop_forever()


if __name__ == '__main__':
    run()