tcn.org.countries.v1alpha1.ListCountriesResponse(ListCountriesResponse)

{
    "countries": [
        {
            "name": "string",
            "iso3_code": "string",
            "display_name": "string",
            "currency_code": "string",
            "iso_numeric_code": 0,
            "country_sid": 0,
            "country_dialing_code": [
                0
            ]
        }
    ],
    "next_page_token": "string"
}