/v3/marketing/favor/coupon-stocks创建代金券接口签名失败

{"code":"SIGN_ERROR","detail":{"field":"signature","location":"authorization","sign_information":{"method":"POST","truncated_sign_message":"POST\n/v3/marketing/favor/coupon-stocks\n1579489043\n0d8d78a0f1884e9887044dd30099cb60\n\n","sign_message_length":84,"url":"/v3/marketing/favor/coupon-stocks"},"detail":{"issue":"sign not match"}},"message":"错误的签名，验签失败"}