curl --request GET \
  --url https://api.scribe-mail.com/v1/marketing_campaigns \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "<string>",
      "name": "<string>",
      "send_email": true,
      "content": {},
      "smart_fields_conditions": [
        [
          {
            "smart_field_id": "<string>",
            "values": [
              "<string>"
            ]
          }
        ]
      ],
      "signature_template_ids": [
        "<string>"
      ],
      "start_time": "2023-11-07T05:31:56Z",
      "end_time": "2023-11-07T05:31:56Z",
      "time_zone": "<string>",
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z"
    }
  ],
  "pagination": {
    "next_cursor": "<string>",
    "has_more": true,
    "limit": 123
  }
}