string(447) "{"code":"SIGN_ERROR","detail":{"detail":{"issue":"sign not match"},"field":"signature","location":"authorization","sign_information":{"method":"POST","sign_message_length":266,"truncated_sign_message":"POST\n/v3/marketing/favor/users/oapaX5OxSfqxcUd1e_JhfLLiD7Yw/coupons\n1577959483\nhzb9usvdjw6y2hxdzvpcxhlirkcxcorb\n{\"stock_\n","url":"/v3/marketing/favor/users/oapaX5OxSfqxcUd1e_JhfLLiD7Yw/coupons"}},"message":"错误的签名，验签失败"}"