curl --request GET \
  --url https://api.example.com/api/economic/v1/list-fuel-prices

{
  "countries": [
    {
      "code": "<string>",
      "name": "<string>",
      "currency": "<string>",
      "flag": "<string>",
      "gasoline": {
        "usdPrice": 123,
        "localPrice": 123,
        "grade": "<string>",
        "source": "<string>",
        "available": true,
        "wowPct": 123,
        "observedAt": "<string>"
      },
      "diesel": {
        "usdPrice": 123,
        "localPrice": 123,
        "grade": "<string>",
        "source": "<string>",
        "available": true,
        "wowPct": 123,
        "observedAt": "<string>"
      },
      "fxRate": 123
    }
  ],
  "fetchedAt": "<string>",
  "cheapestGasoline": "<string>",
  "cheapestDiesel": "<string>",
  "mostExpensiveGasoline": "<string>",
  "mostExpensiveDiesel": "<string>",
  "wowAvailable": true,
  "prevFetchedAt": "<string>",
  "sourceCount": 123,
  "countryCount": 123
}