curl --request GET \
  --url https://api.ai2fin.com/api/tax/country-rates \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "data": {
    "rates": [
      {
        "countryCode": "<string>",
        "taxType": "<string>",
        "taxName": "<string>",
        "standardRate": 123,
        "reducedRate": 123,
        "zeroRate": 123,
        "combinedRate": 123,
        "stateProvince": "<string>",
        "description": "<string>"
      }
    ],
    "ratesByCountry": {}
  }
}