## 查询链接信息
```[tex]
返回结果说明
sign_time=null：文件未签字；
sign_time!=null,文件已签字，其值表示最近的一次签字时间
```
~~~[api]
get:https://open.wellsign.cn/sdk/sign/v1/links
*token=b4df7abff27641dcf0b92b3ef7e6ded8#
*sequence_id=fdsfd#
<<<
success
{
"succeed": 0,
"msg": "获取成功",
"data": {
"down_url": "https://dandanqian.com/Xss8Wsgsle.html",
"name": "测试.pdf",
"sign_time": "2019-02-23 10:26:29",
}
}
~~~
