I am using the asyncio and websocket package in python just to test the connection and events, here is the code
import asyncio
import websockets

async def connect_to_websocket(url):
    async with websockets.connect(url) as websocket:
        while True:
            event = await websocket.recv()
            if event == "playing_now":
                print("Received playing_now event!")



websocket_url = 'wss://listenbrainz.org/socket.io/'


asyncio.get_event_loop().run_until_complete(connect_to_websocket(websocket_url))