curl --request GET \
  --url https://api.orderly.org/v1/public/futures

{
  "success": true,
  "data": {
    "rows": [
      {
        "symbol": "PERP_ETH_USDC",
        "index_price": 1901.6,
        "mark_price": 1950,
        "sum_unitary_funding": 387.891,
        "est_funding_rate": 0.00046875,
        "last_funding_rate": 0.00046875,
        "next_funding_time": 1683270060000,
        "open_interest": "None",
        "24h_open": 2115,
        "24h_close": 2115,
        "24h_high": 2115,
        "24h_low": 2115,
        "24h_amount": 0,
        "24h_volume": 0
      }
    ]
  },
  "timestamp": 1702989203989
}