{
  "id": 42,
  "jsonrpc": "2.0",
  "method": "private/subscribe",
  "params": {
    "channels": [
      "user.isolated.changes.SOL_USDC-PERPETUAL.100ms"
    ]
  }
}

{
  "jsonrpc": "2.0",
  "method": "subscription",
  "params": {
    "channel": "user.isolated.changes.SOL_USDC-PERPETUAL.100ms",
    "data": {
      "instrument_name": "SOL_USDC-PERPETUAL",
      "isolated": true,
      "main_uid": 1000,
      "orders": [],
      "positions": [],
      "trades": [],
      "user_id": 123456
    }
  }
}