{
  "type": "subscribe",
  "subscriptions": [
    {
      "channel": "index_price",
      "query": {
        "pair": "BTC_USDC"
      }
    }
  ]
}

{
  "kind": "event",
  "type": "index_price",
  "timestamp_ms": 1677721600000,
  "data": {
    "value": 45000.5,
    "timestamp": 1677721600000
  },
  "subscription": {
    "channel": "index_price",
    "query": {
      "pair": "BTC_USDC"
    }
  }
}

import WebSocket from 'ws';

const ws = new WebSocket('wss://staging.kyan.sh/ws');
const API_KEY = 'your-api-key-here';

ws.onopen = () => {
  ws.send(JSON.stringify({ type: 'auth', api_key: API_KEY }));
};

ws.onmessage = (event) => {
  const message = JSON.parse(event.data.toString());

  if (message.type === 'auth' && message.success) {
    ws.send(JSON.stringify({
      type: 'subscribe',
      subscriptions: [
        { channel: 'index_price', query: { pair: 'BTC_USDC' } }
      ]
    }));
    ws.onmessage = handleMessages;
  }
};

function handleMessages(event: WebSocket.MessageEvent) {
  const message = JSON.parse(event.data.toString());
  if (message.event === 'index_price') {
    console.log('New index price:', message.data.value);
  }
}