curl --request GET \
  --url https://api.bridge.xyz/v0/lists/countries \
  --header 'Api-Key: <api-key>'

{
  "count": 123,
  "data": [
    {
      "name": "<string>",
      "alpha3": "<string>",
      "postal_code_format": "<string>",
      "subdivisions": [
        {
          "name": "<string>",
          "code": "<string>"
        }
      ]
    }
  ]
}