curl --request GET \
  --url https://api.roxom.com/v1/market/instruments \
  --header 'X-API-Key: <api-key>' \
  --header 'X-API-Signature: <api-key>'

{
  "data": {
    "instruments": [
      {
        "baseDecimals": 1,
        "btcUnit": "sats",
        "contractSize": 1,
        "id": "<string>",
        "instrumentType": "perpetual",
        "lotSizeFilter": {
          "maxLimitOrderValue": "<string>",
          "maxMarketOrderValue": "<string>",
          "minOrderValue": "<string>",
          "quantityTickSize": "<string>",
          "maxPositionValue": "<string>"
        },
        "priceFilter": {
          "tickSize": "<string>",
          "marketOrderSlippage": "<string>",
          "maxOrderSlippage": "<string>"
        },
        "quoteDecimals": 1,
        "status": "trading",
        "symbol": "<string>",
        "calendarFilter": {
          "calendarId": "<string>",
          "normalSessionEndTime": "<string>",
          "normalSessionStartTime": "<string>",
          "timezone": "<string>"
        },
        "fundingFeeFilter": {
          "fundingFeePeriodMins": 123,
          "fundingFeeRateStep": "<string>",
          "maxFundingFeeRate": "<string>",
          "minFundingFeeRate": "<string>",
          "nextFundingTimeMs": 123
        },
        "marginTradingFilter": {
          "leverageStep": "<string>",
          "maintenanceMarginRatio": "<string>",
          "maxLeverage": "<string>",
          "minLeverage": "<string>"
        }
      }
    ]
  },
  "error": true
}