curl --request GET \
  --url https://api.qfex.com/settlement-prices

{
  "$schema": "https://api.qfex.com/schemas/SettlementPricesResponseBody.json",
  "count": 123,
  "data": [
    {
      "asof": "<string>",
      "future_settlement_price": 123,
      "inserted_at": "2023-11-07T05:31:56Z",
      "spot_settlement_price": 123,
      "spot_to_future_ratio": 123,
      "symbol": "<string>"
    }
  ]
}