{
  "schema": {
    "bsonType": "object",
    "required": [],
    "permission": {
      "read": "auth.uid == doc.user_id",
      "create": "auth.uid == doc.user_id",
      "update": "auth.uid == doc.user_id",
      "delete": "auth.uid == doc.user_id"
    },
    "properties": {
      "_id": {
        "description": "ID，系统自动生成"
      },
      "notification_id": {
        "bsonType": "string",
        "foreignKey": "uni-notification-center._id"
      },
      "create_time": {
        "bsonType": "timestamp",
        "forceDefaultValue": {
          "$env": "now"
        }
      }
    }
  },
  "index": []
}