.NET 现金红包业务APP拉起付款提示系统繁忙，请稍后再试ALIN10146
服务器端生成的orderStr如下：
app_id=2018060960377017&method=alipay.fund.trans.app.pay&format=json&charset=utf-8&sign_type=RSA2×tamp=2019-10-04 02%3A34%3A42&version=1.0&app_cert_sn=336da95cd6262199ac366363a0bfc440&alipay_root_cert_sn=687b59193f3f462dd5336e5abf83c5d8_02941eef3187dddf3d3b83462e1dfcf6&alipay_sdk=alipay-sdk-NET-3.4.1&biz_content=%7B%22out_biz_no%22%3A%22A1910040234395334%22%2C%22trans_amount%22%3A%2210%22%2C%22product_code%22%3A%22STD_RED_PACKET%22%2C%22biz_scene%22%3A%22PERSONAL_PAY%22%2C%22remark%22%3A%22%E7%BA%A2%E5%8C%85%22%2C%22order_title%22%3A%22%E7%BA%A2%E5%8C%85%22%2C%22time_expire%22%3A%222019-10-04 03%3A24%22%2C%22refund_time_expire%22%3A%222019-10-14 02%3A34%22%2C%22business_params%22%3A%22%7B%5C%22sub_biz_scene%5C%22%3A%5C%22REDPACKET%5C%22%2C%5C%22payer_binded_alipay_uid%5C%22%3A%5C%222088312790830227%5C%22%2C%5C%22payee_show_name%5C%22%3A%5C%22A1910040234395334%5C%22%7D%22%7D&sign=gOL0aii00P00jWVRgwuaQWKGsjq2rO37IYiv%2FmntuszR1nj6xnO1ZTQT2c5NmjUode6KPJXzKzHqOzaNBO6CZmz822bbjvesPtJoYGDriSSnUhr7RhcL60mEsij%2BAFyFnEyfYM7DpDF8J%2BxKkbhKYQIn7kEziDP4NA0gSOuGWuJUnSU75WpE8zbzRXjjHc4gvOPUkkCVPE0LWSPpQ6Dv7lG%2FbgW7uvsh%2F37H9f3KfYhyXtCvQb%2FX7FM0cFzjcUIlVjBcjipN6gzhFwWTZkIsGJ2LByESs%2F%2B%2BHXZFoBZ9hJdbdYTBiIDin5DXM5ToHoGZbTWnZn1RERuNt8fDbgVJzw%3D%3D
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