{
  "name": "Immediate Alert",
  "subject": "Critical Update",
  "sender_id": "b7e1-acde-4912-8839",
  "body": "<h1>Scheduled Maintenance</h1>",
  "recipients": [
    {
      "email": "alert@domain.com",
      "name": "Ops"
    }
  ]
}

{
  "success": true,
  "data": {
    "campaign_id": "7722-11bc",
    "status": "sending",
    "message": "Campaign created and started successfully."
  }
}