支付宝app支付 验签突然不过

{"gmt_create":"2018-11-20 17:25:41","charset":"utf-8","seller_email":"","subject":"","sign":"SmNeMWp04PwmHuh+EQG4ZD9TaVRUMD6DEi+pVh43x/Xdi0idKO02C9j89YPgwliWhK+t6a2RxgRw+rAAySILSM57LWCGpmB2CZqKIqCi2NUyy2NaNRWbhjIGzVKSaWHLrqjfJkNfCeLmzlYVuLSnwMNZKpXY/hO8+DrjHZfD/2zw+NknwoRVj8OpjVkjUY1Us+hxXLz6MQ/5xDJwepyxoaLvAMjSKBKOhP6TH5QlJL4Pa/SdbxnENUArOlqmErVx+4Egl8ZcF+I2/3ehsz53UbRJxvYZoWicUtCOvfpgth6yrRrDHifaBFgUuW/hqBTPPeDA91Q6FfApscNQNsEfNg==","body":"trade","buyer_id":"2088702167300284","invoice_amount":"0.01","notify_id":"2018112000222172542000281027419507","fund_bill_list":"[{"amount":"0.01","fundChannel":"ALIPAYACCOUNT"}]","notify_type":"trade_status_sync","trade_status":"TRADE_SUCCESS","receipt_amount":"0.01","app_id":"","buyer_pay_amount":"0.01","sign_type":"RSA2","seller_id":"2088131843903602","gmt_payment":"2018-11-20 17:25:41","notify_time":"2018-11-20 17:39:28","version":"1.0","out_trade_no":"","total_amount":"0.01","trade_no":"","auth_app_id":"2018071760706324","buyer_logon_id":"151****0829","point_amount":"0.00"}

fund_bill_list":"[{"amount":"0.01","fundChannel":"ALIPAYACCOUNT"}]

这个是被转义的
调错公钥，这个是支付宝公钥

返回的字符串有问题。对比之前的，看有没有转义之类的