{
  "comments": {
    "new": "ISBN: 0-7928-3858-0"
  },
  "error_count": {
    "new": "1"
  },
  "ring_codes": {
    "new": "IFPI 500C\nPSRM-009150\t1 IFPI L330 A02 IFPI 5038",
    "old": "IFPI 500C"
  }
}