问如何提高调用API网关、scf的请求内容长度限制？

$ base64 test.cap | curl -d @- https://service-g5ht32mi-1111.gz.apig .tencentcs.com/test/main_handler % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 12.2M 0 94 100 12.2M 5 769k 0:00:16 0:00:16 --:--:-- 2587k{ errorCode":1,"errorMessage":"Content length[13337262] exceed sync content lengt [6291456]"}