{
  "id": "item-abc123",
  "type": "banner",
  "size": "example-string",
  "imageUrl": "https://example.com/image.jpg",
  "clickUrl": "https://example.com/image.jpg",
  "startDate": "2025-03-15T14:30:00Z",
  "endDate": "2025-03-15T14:30:00Z"
}