分账接口签名验证失败？

{"code":"SIGN_ERROR","detail":{"detail":{"issue":"sign not

match"},"field":"signature","location":"authorization","sign_information":{"method":"POST","sign_message_length":85,"truncated_sign_message":"POST\n/v3/ecommerce/profitsharing/orders\n1592016574\nHwa2T9ttFaMVycFuFfoTLY2sJArqE5aM\n\n","url":"/v3/ecommerce/profitsharing/orders"}},"message":"错误的签名，验签失败"}

有没有DEMO，问题是这个签名我用来发送别的接口可以，怎么到分账又不行吗？