获取用户属性

https://xxxxxx/v4/all_member_push/im_get_attr?usersig=xxx&identifier=admin&sdkappid=88888888&random=99999999&contenttype=json

{
    "To_Account": [
        "张小红",
        "陈小明",
        "abc"
    ]
}

{
    "ActionStatus": "OK",
    "ErrorInfo": "",
    "ErrorCode": 0,
    "UserAttrs": [
        {
            "To_Account": "张小红",
            "Attrs": {
                "sex": "女",
                "city": "纽约"
            }
        },
        {
            "To_Account": "abc",
            "Attrs": {}
        },
        {
            "To_Account": "陈小明",
            "Attrs": {
                "sex": "男",
                "city": "深圳"
            }
        }
    ]
}