curl --request GET \
  --url https://nudgen.net/api/v1/campaigns \
  --header 'Authorization: Bearer <token>'

{
  "campaigns": [
    {
      "id": "<string>",
      "name": "<string>",
      "subject": "<string>",
      "scheduledAt": "2023-11-07T05:31:56Z",
      "sentAt": "2023-11-07T05:31:56Z",
      "createdAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z"
    }
  ],
  "total": 123,
  "page": 123,
  "limit": 123,
  "totalPages": 123
}