{
  "comments": {
    "new": "ISBN: 1-57629-182-0"
  },
  "error_count": {
    "new": "1"
  },
  "ring_codes": {
    "new": "PSRM-010010 IFPI 5022\nPSRM-010010\t1 IFPI L330 A01 IFPI 500E",
    "old": "PSRM-010010 IFPI 5022"
  }
}