Get Children Items

{
   "results": [
      {
         "id": "11",
         "campaign_id": "1234",
         "type": "ITEM",
         "url": "https://www.demosite.com/news/demo_article_11.html",
         "thumbnail_url": "http://cdn.demosite.com/demo_image_11.jpg",
         "title": "Demo Article 11",
         "approval_state": "PENDING",
         "is_active": true,
         "status": "PENDING_APPROVAL"
      },
      {
         "id": "12",
         "campaign_id": "1234",
         "type": "ITEM",
         "url": "https://www.demosite.com/news/demo_article_12.html",
         "thumbnail_url": "http://cdn.demosite.com/demo_image_12.jpg",
         "title": "Demo Article 12",
         "approval_state": "PENDING",
         "is_active": true,
         "status": "PENDING_APPROVAL"
      },
      {
         "id": "13",
         "campaign_id": "1234",
         "type": "ITEM",
         "url": "https://www.demosite.com/news/demo_article_13.html",
         "thumbnail_url": "http://cdn.demosite.com/demo_image_13.jpg",
         "title": "Demo Article 13",
         "approval_state": "PENDING",
         "is_active": true,
         "status": "PENDING_APPROVAL"
      }
   ]
}

{
    "http_status": 404,
    "message": "Resource not found"
}