{
  "action": "auth",
  "api_key": "your_api_key",
  "signature": "a3f9c2d1e8b74c8d6e5f4a3b2c1d0e9f8a7b6c5d4e3f2a1b0c9d8e7f6a5b4c3d",
  "timestamp": 1750000000,
  "nonce": "1750000000123456"
}

{
  "action": "pong"
}

{
  "action": "unsubscribe",
  "channels": [
    {
      "name": "tick.G1.json",
      "symbols": [
        "ACB"
      ]
    }
  ]
}

{
  "action": "subscribe",
  "channels": [
    {
      "name": "tick.G1.json",
      "symbols": [
        "ACB",
        "HPG"
      ]
    }
  ]
}

{
  "action": "welcome",
  "session_id": "conn_1782199800969809263",
  "timestamp": 1750000000,
  "message": "Please authenticate within 30 seconds"
}

{
  "action": "auth_success",
  "user_id": "your_api_key",
  "capabilities": {
    "batch_delivery": false
  },
  "rate_limit": {
    "messages_per_second": 100,
    "subscriptions_max": 100
  }
}

{
  "action": "ping",
  "timestamp": 1750000000123
}

{
  "action": "subscribed"
}

{
  "action": "unsubscribed"
}

{
  "action": "error",
  "code": "AUTH_FAILED",
  "message": "authentication failed: invalid signature"
}

{
  "action": "connection_expired",
  "code": "MAX_DURATION_EXCEEDED",
  "message": "Connection expired after 8 hours. Please reconnect."
}