task/user_cold_start/goodreads/tasks/task_18.json

{
  "type": "recommendation",
  "candidate_category": "book",
  "user_id": "281051a33715d239f8a6dd7fe907893b",
  "candidate_list": [
    "1245645",
    "4908216",
    "21082232",
    "18465502",
    "6587366",
    "941916",
    "1885587",
    "5421161",
    "18194357",
    "22929748",
    "1409192",
    "343006",
    "3301244",
    "10599490",
    "457602",
    "1226407",
    "264451",
    "942160",
    "2064778",
    "571053"
  ],
  "loc": [
    -1,
    -1
  ]
}