UserInfo

{
    "user_id": 0,
    "account": "string",
    "name": "string",
    "major": [
        "string"
    ],
    "university": "string",
    "headphoto": "string",
    "backgroundphoto": "string",
    "signature": "string",
    "introduce": "string",
    "article_num": 0,
    "like_num": 0,
    "collect_num": 0,
    "comment_num": 0,
    "createdAt": "string"
}