curl --request GET \
  --url https://api.hypereth.io/v2/hyperliquid/getFundingRates \
  --header 'X-API-KEY: <api-key>'

{
  "fundingRates": [
    {
      "symbol": "BTC",
      "fundingRate": "0.00005000",
      "fundingTime": 1710000000000
    },
    {
      "symbol": "ETH",
      "fundingRate": "-0.00003200",
      "fundingTime": 1710003600000
    }
  ],
  "pagination": {
    "hasMore": true,
    "nextCursor": "time:1710000000000"
  },
  "dataTime": 1710011000000
}