curl --request GET \
  --url https://{notifuseDomain}/api/broadcasts.list \
  --header 'Authorization: Bearer <token>'

{
  "broadcasts": [
    {
      "id": "broadcast_12345",
      "workspace_id": "ws_1234567890",
      "name": "Spring Newsletter 2024",
      "channel_type": "email",
      "status": "draft",
      "audience": {
        "list": "newsletter",
        "segments": [
          "premium_users"
        ],
        "exclude_unsubscribed": true
      },
      "schedule": {
        "is_scheduled": false,
        "scheduled_date": "2024-03-15",
        "scheduled_time": "10:30",
        "timezone": "America/New_York",
        "use_recipient_timezone": false
      },
      "test_settings": {
        "enabled": true,
        "sample_percentage": 20,
        "auto_send_winner": true,
        "auto_send_winner_metric": "open_rate",
        "test_duration_hours": 24,
        "variations": [
          {
            "template_id": "template_variant_a",
            "variation_name": "Variation A",
            "metrics": {
              "recipients": 123,
              "delivered": 123,
              "opens": 123,
              "clicks": 123,
              "bounced": 123,
              "complained": 123,
              "unsubscribed": 123
            },
            "template": {}
          }
        ]
      },
      "utm_parameters": {
        "source": "newsletter",
        "medium": "email",
        "campaign": "spring_2024",
        "term": "<string>",
        "content": "<string>"
      },
      "metadata": {},
      "winning_template": "template_winner",
      "test_sent_at": "2023-11-07T05:31:56Z",
      "winner_sent_at": "2023-11-07T05:31:56Z",
      "test_phase_recipient_count": 123,
      "winner_phase_recipient_count": 123,
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z",
      "started_at": "2023-11-07T05:31:56Z",
      "completed_at": "2023-11-07T05:31:56Z",
      "cancelled_at": "2023-11-07T05:31:56Z",
      "paused_at": "2023-11-07T05:31:56Z",
      "pause_reason": "<string>"
    }
  ],
  "total_count": 45
}