#8.31.7 获取云账户签约协议【已开发，待云账户联调】

GET /tieup/api/v1/artist/withdrawal-signing/contract

协议接口完整响应示例：

{
  "code": 200,
  "message": "成功",
  "data": {
    "agreement_url": "https://thirdparty.yunzhanghu.com/app/signing-assistant-tob/example",
    "title": "《灵活就业合作伙伴协议》",
    "agreement_token": "agreement-token-example",
    "expires_in": 7200
  }
}