eth_unsubscribe

const ws = new WebSocket("wss://optimism-sepolia-rpc.blockreq.com/v1/rpc/public");

ws.onopen = () => {
  ws.send(JSON.stringify({
  "jsonrpc": "2.0",
  "method": "eth_unsubscribe",
  "params": [
    "0x1"
  ],
  "id": 1
}));
};
ws.onmessage = (event) => {
  console.log(JSON.parse(event.data));
};

import asyncio
import json

import websockets


async def main():
    async with websockets.connect("wss://optimism-sepolia-rpc.blockreq.com/v1/rpc/public") as ws:
        await ws.send('{"jsonrpc":"2.0","method":"eth_unsubscribe","params":["0x1"],"id":1}')
        async for message in ws:
            print(json.loads(message))


asyncio.run(main())