Manipulate the API Frames using Wireless Modem

Hi, I am using a wireless modem consisting of 900hp-S3-pro.
Right now I am reading the API frame in bytes format from wireless sensors but I want to receive to manipulate the frame bytes.
Can you suggest me any option which helps me to make it work?

Wireless Modem - https://store.ncd.io/product/900hp-s3b-long-range-wireless-mesh-modem-with-usb-interface/