Get default VN30 spot symbol

curl --request GET \
  --url https://api-gw.verolabs.co/api/v1/MarketData/GetVN30Spot

{
  "isSuccess": true,
  "data": {
    "symbol": "<string>",
    "companyName": "<string>",
    "sectorLvl1": "<string>",
    "sectorLvl2": "<string>",
    "sectorLvl3": "<string>",
    "industryName": "<string>",
    "logoId": "<string>",
    "news": [
      "<unknown>"
    ],
    "sentiment": {
      "bullish": 123,
      "bullishPercent": 123,
      "bullishTime": 123,
      "bearish": 123,
      "bearishPercent": 123,
      "bearishTime": 123
    },
    "info": {
      "id": "<string>",
      "seq": 123,
      "time": 123,
      "symbol": "<string>",
      "boardID": "<string>",
      "nomiPrc": 123,
      "ceilPrc": 123,
      "floorPrc": 123,
      "lsPrc": 123,
      "lsVol": 123,
      "openPrc": 123,
      "closePrc": 123,
      "highPrc": 123,
      "lowPrc": 123,
      "vWAP": 123,
      "totVol": 123,
      "totVal": 123,
      "tradingSession": "<string>",
      "openInterest": 123
    },
    "stat": {
      "id": "<string>",
      "symbol": "<string>",
      "type": "<string>",
      "lot": 123,
      "minQty": 123,
      "maxQty": 123,
      "prcStep": 123,
      "name": "<string>",
      "productGroupID": "<string>",
      "tickerCode": "<string>",
      "symbolName": "<string>",
      "underlyingSymbolCode": "<string>",
      "expirationDate": "<string>",
      "contractSize": 123
    },
    "depth": {
      "seq": 123,
      "time": 123,
      "symbol": "<string>",
      "boardID": "<string>",
      "bidPriceDepth": [
        {
          "prc": 123,
          "vol": 123
        }
      ],
      "askPriceDepth": [
        {
          "prc": 123,
          "vol": 123
        }
      ]
    },
    "trend": {
      "buyUp": {
        "symbol": "<string>",
        "way": 123,
        "vwapPrice": 123,
        "totalValue": 123,
        "totalVol": 123,
        "tradeCount": 123
      },
      "sellDown": {
        "symbol": "<string>",
        "way": 123,
        "vwapPrice": 123,
        "totalValue": 123,
        "totalVol": 123,
        "tradeCount": 123
      },
      "buyUpPct": 123,
      "sellDownPct": 123,
      "gapValue": 123
    }
  }
}