获取用户信息

{
    "Success": true,
    "Message": "ok",
    "Data": {
        "Id": "old-12345",
        "Username": "steve",
        "Nickname": "史蒂夫",
        "Email": "user@example.com",
        "Avatar": "https://.../avatar.png",
        "Level": "5",
        "BackgroundImage": "https://.../bg.png",
        "FollowCount": 12,
        "FansCount": 34,
        "PostCount": 8,
        "Signature": "红石玩家",
        "Exp": 1200,
        "Gender": "男"
    }
}