database.rules.json

{
  "rules": {
    "users": {
      "$uid": {
        "states": {
          ".read": "$uid === auth.uid",
          ".write": "$uid === auth.uid",
          "$lisId": {
            ".read": "$uid === auth.uid",
            ".write": "$uid === auth.uid"
          }
        },
        "info": {
          ".read": true,
          ".write": "$uid === auth.uid",
          "name": {
            ".read": true,
            ".write": "$uid === auth.uid",
            ".validate": "newData.isString()"
          },
          "email": {
            ".read": true,
            ".write": "$uid === auth.uid",
            ".validate": "newData.isString()"
          },
          "$other": {
            ".read": false,
            ".write": false
          }
        }
      }
    },
    "lists": {
      "$list_id": {
        ".read": true,
        ".write": "data.val() == auth.id",
        "created_by": {
          ".read": true,
          ".write": "data.val() == auth.id"
        },
        "$other": {
          ".read": true,
          ".write": "auth.uid != null"
        }
      }
    },
    "list_configs": {
      ".read": true,
      ".write": false,
      "$list_id": {
        ".read": true,
        ".write": "auth.uid != null"
      }
    }
  }
}