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

{
  "T": "e",
  "marketId": "DVX",
  "boardId": "G1",
  "symbol": "41I1G1000",
  "isin": "VN41I1G10000",
  "closePrice": 28.45,
  "expectedTradePrice": 28.45,
  "expectedTradeQuantity": 133780,
  "time": {
    "Seconds": 1779694639,
    "Nanos": 736000000
  }
}