curl --request GET \
  --url https://api.getmaito.com/v1/newsletter/categories \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "<string>",
      "workspaceId": "<string>",
      "accountSetId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "name": "<string>",
      "slug": "<string>",
      "createdAt": "<string>",
      "updatedAt": "<string>"
    }
  ]
}