task/item_cold_start/goodreads/tasks/task_39.json

{
  "type": "recommendation",
  "candidate_category": "book",
  "user_id": "6b7bcb1b73dc9026fed4b5c38d7d56b2",
  "candidate_list": [
    "18730826",
    "87219",
    "19043805",
    "8579400",
    "7701616",
    "2694571",
    "546131",
    "2620635",
    "277077",
    "174531",
    "2100275",
    "402128",
    "26208078",
    "1289362",
    "2042391",
    "3233667",
    "8965367",
    "23011150",
    "601523",
    "6441014"
  ],
  "loc": [
    -1,
    -1
  ]
}1,
    -1
  ]
}