curl --request GET \
  --url http://localhost:8787/api/v1/regions

[
  {
    "name": "africa",
    "countryCount": 59,
    "subregions": [
      "Eastern Africa",
      "Middle Africa",
      "..."
    ]
  },
  {
    "name": "americas",
    "countryCount": 57,
    "subregions": [
      "Caribbean",
      "Central America",
      "..."
    ]
  }
]