{
  "rules": {
    "bookmark": { // only allows bookmark
      ".read": "true",
      ".write": "auth != null",
      "comic": {
        "list": {".indexOn": ["id", "bmdb", "title", "alternative"]}
      },
      "novel": {
        "list": {".indexOn": ["id", "bmdb", "title", "alternative"]}
      },
      "anime": {
        "list": {".indexOn": ["id", "bmdb", "title", "alternative"]}
      }
    }
  }
}