签名串为:POST

/v3/apply4subject/applyment

1569120465

G355neZ4BJRca5edwfRy7zHu20BYYWoG

本地签名串长度为:2872

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微信返回信息:

返回信息为{"code":"SIGN_ERROR","detail":{"detail":{"issue":"sign not match"},"field":"signature","location":"authorization","sign_information":{"method":"POST","sign_message_length":2872,"truncated_sign_message":"POST\n/v3/apply4subject/applyment\n1569120465\nG355neZ4BJRca5edwfRy7zHu20BYYWoG\n{\"identi\n","url":"/v3/apply4subject/applyment"}},"message":"错误的签名，验签失败"}

请问一下是哪里出的问题呢,定位是authorization头信息,时间戳和随机字符串签名和报文体用的同一个,json串用的也是一个变量,还是签名失败,能解答一下吗,谢谢!