curl --request GET \
  --url http://api.stuut.ai/v1/phone-numbers/supported-countries \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "continent": "<string>",
      "country_codes": [
        "<string>"
      ],
      "iso_country_code": "<string>",
      "name": "<string>"
    }
  ]
}