{
  "legacy": {
    "write_offset": {
      "new": "-12"
    }
  },
  "ring_codes": {
    "new": "CDC956250 R2F IFPI L240 12, 15 IFPI 4121",
    "old": "CDC956250 R2F IFPI L240 15 IFPI 4121"
  }
}