import requests, json

r = requests.get('https://api.telegram.org/bot5115036608:AAGeyXVq5eNvdAkaCQHU9NfH16uAAiSKiuk/getUpdates?offset=0')
d = r.json()
msgs = [m for m in d.get('result', []) if 'message' in m and m['message'].get('text') == 'Test topic id']
for m in msgs:
    msg = m['message']
    tid = msg.get('message_thread_id', 'none')
    cid = msg['chat']['id']
    from_id = msg['from']['id']
    print(f'chat={cid} thread_id={tid} from={from_id} text={msg.get("text","")}')
if not msgs:
    print('no matching messages found')
    for m in d.get('result', []):
        if 'message' in m:
            mm = m['message']
            print(f"  text='{mm.get('text','')[:60]}' thread_id={mm.get('message_thread_id','-')}")