array(3) {

  ["code"]=>

  string(10) "SIGN_ERROR"

  ["detail"]=>

  array(4) {

    ["detail"]=>

    array(1) {

      ["issue"]=>

      string(14) "sign not match"

    }

    ["field"]=>

    string(9) "signature"

    ["location"]=>

    string(13) "authorization"

    ["sign_information"]=>

    array(4) {

      ["method"]=>

      string(4) "POST"

      ["sign_message_length"]=>

      int(321)

      ["truncated_sign_message"]=>

      string(84) "POST

/v3/merchant/media/upload

1******6

79***a2***2**********

      ["url"]=>

      string(25) "/v3/merchant/media/upload"

    }

  }

  ["message"]=>

  string(30) "错误的签名，验签失败"