{
    "type": "recommendation",
    "user_id": "079ba57039d135bf4dfbedad69084494",
    "candidate_category": "book",
    "candidate_list": [
        "4924279",
        "6509164",
        "11370496",
        "6658375",
        "2657953",
        "1202113",
        "31848333",
        "13514076",
        "6945640",
        "35175884",
        "960392",
        "7844985",
        "29436329",
        "770337",
        "2368556",
        "14688546",
        "35969851",
        "9762795",
        "3429820",
        "1089337"
    ],
    "loc": [
        -1,
        -1
    ],
    "data type": "real"
}