curl --request GET \
  --url https://api.hubapi.com/cms/v3/pages/landing-pages/folders \
  --header 'Authorization: Bearer <token>'

{
  "results": [
    {
      "category": 123,
      "created": "2023-11-07T05:31:56Z",
      "deletedAt": "2023-11-07T05:31:56Z",
      "id": "<string>",
      "name": "<string>",
      "parentFolderId": 123,
      "updated": "2023-11-07T05:31:56Z"
    }
  ],
  "total": 123,
  "paging": {}
}