APIV3的提交申请单接口，一直返回系统繁忙，请使用同样参数再试，头都搞大了

请求报文如下：

{"channel_id":"x'x'x'x'x","business_code":"152505029500012","contact_info":{"name":"UvpUJD4jnAJpCpol...BMBfe3YZPEEfCOgpgvbR9AisyM22yBQaxJjoiRY/MJJag==","id_card_number":"OBZTtTkaLxcBx6...4QuhSPMBHl6UoCULQzHQ=="},"subject_info":{"subject_type":"SUBJECT_TYPE_INDIVIDUAL","business_licence_info":{"licence_number":"9xx10xxxxBxxx74","licence_copy":"JvcxcMICncHTLJ85eduFgEEw2M4h4JGYylLMOI5Z_QRJLpw23CU6wdtbSnasZ1OGfnApSeLvOb90cMI7hAMDnHsCKkNRmHz257JCPfvpL8g","merchant_name":"个体户李xx","legal_person":"李xx","company_address":"市中区xxx鲜市场","licence_valid_date":"[\"2018-12-01\",\"forever\"]"}},"identification_info":{"identification_type":"IDENTIFICATION_TYPE_IDCARD","identification_name":"UvpUJD4jnAJpC...K18rmezME1/PXXJ3YBeN9w==","identification_number":"OBZTtTkaLxcBx6r2pAw0n.....O4QuhSPMBHl6UoCULQzHQ==","identification_valid_date":"[\"2018-01-01\",\"2038-01-01\"]","identification_front_copy":"JvcxcMICncHTLJ85eduFgIxFR9qk_YNslYlcy5mkBvaH7p8e3yd9PAoUPbqsUNG6Qfd1sVr-a0P_FxSWkYx4INAXWBhZKYnqYGhnhMKjilw","identification_back_copy":"JvcxcMICncHTLJ85eduFgL0KebR2E3ijDgvr9yMYNbsGK5DYUnFIbFEzJLp9DNJ0iiIMd8fV-r1nwtT1ZdGTEiPJ-PMuataBdY7UkKzDvUM"}}

部分信息已经被处理掉了，跪求解决办法