[
    {
        "IndexName": "index_search_version",
        "MgoKeySchema": {
            "MgoIndexKeys": [
                {
                    "Name": "appid",
                    "Direction": "1"
                },
                {
                    "Name": "platform_id",
                    "Direction": "1"
                },
                {
                    "Name": "version",
                    "Direction": "1"
                }
            ],
            "MgoIsUnique": true
        }
    }
]