// 文档教程: https://uniapp.dcloud.net.cn/uniCloud/schema
{
	"bsonType": "object",
	"required": [],
	"permission": {
		"read": true,
		"create": false,
		"update": "doc.user_id == auth.uid",
		"delete": false
	},
	"properties": {
		"_id": {
			"description": "ID，系统自动生成"
		},
		"is_read":{
			"bsonType": "bool",
			"defaultValue":false
		},
		"payload":{
			"state":{}
		}
	}
}