curl --request GET \
  --url https://staging-api.getpartna.com/v4/rate \
  --header 'x-api-key: <api-key>' \
  --header 'x-api-user: <api-key>'

{
  "data": {
    "rate": {
      "ETH_to_USD": {
        "fromAmount": 1,
        "fromCurrency": "ETH",
        "key": "2400-ETH_to_USD-5ddc8f46-1755873777",
        "rate": 2400,
        "toAmount": 2400,
        "toCurrency": "USD"
      },
      "USDT_to_USD": {
        "fromAmount": 1,
        "fromCurrency": "USDT",
        "key": "1-USDT_to_USD-bbfcdc61-1755873777",
        "rate": 1,
        "toAmount": 1,
        "toCurrency": "USD"
      },
      "USD_to_ETH": {
        "fromAmount": 2500,
        "fromCurrency": "USD",
        "key": "0.0004-USD_to_ETH-c5375bfb-1755873777",
        "rate": 0.0004,
        "toAmount": 1,
        "toCurrency": "ETH"
      }
    }
  },
  "message": "success"
}