Get Saved Item

{
  "savedItem": {
    "id": "uuid",
    "userId": "uuid",
    "contentType": "recipe",
    "contentId": "uuid",
    "createdAt": "2025-01-15T10:30:00Z"
  },
  "collections": [
    {
      "id": "uuid",
      "name": "Street Photography"
    }
  ]
}