欠条怎么写才正规合法

{"name":"\u6b20\u6761\u600e\u4e48\u5199\u624d\u6b63\u89c4\u5408\u6cd5","type":"\u6d77\u5916\u52a8\u6f2b","area":"\u5927\u9646","year":"1991","lang":"\u5fb7\u8bed","play":"4K\u8d85\u6e05","type1":"\u6d77\u5916\u52a8\u6f2b"}