curl https://zeplo.ai/api/campaigns/1 \
  -H "Cookie: connect.sid=s%3A7HImZ-T2BxWSbUsf9dtWdOlBW4rVuORO.5J0Do0NyvBu%2BkTvu1aHvtNs00BKhkpUKTwiokLS0cpw"

{
  "success": true,
  "data": {
    "id": 1,
    "name": "New Year Promo",
    "status": "completed",
    "type": "template",
    "channelId": "647015955153740",
    "templateName": "new_year_promo",
    "languageCode": "en",
    "templateComponents": [],
    "totalRecipients": 500,
    "sentCount": 480,
    "deliveredCount": 470,
    "readCount": 320,
    "repliedCount": 45,
    "failedCount": 20,
    "scheduledAt": "2026-01-01T09:00:00Z",
    "startedAt": "2026-01-01T09:00:00Z",
    "completedAt": "2026-01-01T09:15:00Z",
    "createdAt": "2025-12-28T10:00:00Z",
    "updatedAt": "2026-01-01T09:15:00Z"
  }
}