请教下这个索引格式可能存在的问题

[
        {
           "fields": {
                   "id": "id_2",
                   "title": "海关总署关于保税区免税进口",
                   "body": "天津、大连、上海、南京、宁波、福州、厦门、青岛、深圳、拱北、汕头、黄埔、海口海关： 《海关总署关于 保税区 企业 减 免税",
                   "display_text": "yeewe search",
                   "author": "阿里云",
                   "update_timestamp": "1298273174",
                   "type_id": "779",
                   "cat_id": [1,2],
                   "grade": "10",
                   "source": "进出口税收",
                   "comment_count": "1234",
                   "tag": {"搜索": 10,"阿里云": 2,"云搜索": 5,"开放搜索": 8},
                   "create_timestamp": "1298273174"
                   "focus_count": "8888",
                   "boost": "1",
                   "integer_1": "100",
           },
           "cmd": "ADD"
        },
]
错误代码7102