5.1 余额查询API

{
    "code": 53,
    "data": {
        "balance": 100,
        "bankName": "招商银行",
        "bankType": 1,
        "freezeAmount": 0,
        "payBalance": 50,
        "serviceBalance": 0,
        "serviceRate": 0
    },
    "msg": "成功"
}