curl --request GET \
  --url https://{defaultHost}/v5/app/notification_topics \
  --header 'Authorization: Bearer <token>'

{
  "pagination": {
    "current_page": 123,
    "total_pages": 123,
    "next_page": 123,
    "prev_page": 123,
    "total_count": 123
  },
  "data": [
    {
      "app_id": "<string>",
      "created_at": 123,
      "name": "<string>",
      "description": "<string>",
      "notification_channel_identifiers": [
        "email"
      ],
      "status": "active",
      "topic_identifier": "<string>",
      "topic_type": "company",
      "visibility": "visible"
    }
  ]
}