curl --request GET \
  --url https://app.dograh.com/api/v1/campaign/

{
  "campaigns": [
    {
      "id": 123,
      "name": "<string>",
      "workflow_id": 123,
      "workflow_name": "<string>",
      "state": "<string>",
      "source_type": "<string>",
      "source_id": "<string>",
      "total_rows": 123,
      "processed_rows": 123,
      "failed_rows": 123,
      "created_at": "2023-11-07T05:31:56Z",
      "started_at": "2023-11-07T05:31:56Z",
      "completed_at": "2023-11-07T05:31:56Z",
      "retry_config": {
        "enabled": true,
        "max_retries": 123,
        "retry_delay_seconds": 123,
        "retry_on_busy": true,
        "retry_on_no_answer": true,
        "retry_on_voicemail": true
      },
      "max_concurrency": 123,
      "schedule_config": {
        "enabled": true,
        "timezone": "<string>",
        "slots": [
          {
            "day_of_week": 123,
            "start_time": "<string>",
            "end_time": "<string>"
          }
        ]
      },
      "circuit_breaker": {
        "enabled": false,
        "failure_threshold": 0.5,
        "window_seconds": 120,
        "min_calls_in_window": 5
      }
    }
  ]
}