Pixel Streaming - How to send custom info per-frame

I’m trying to create a custom behavior in the PS player using the following guide:

Communicating from UE4 to the Player Page
The goal is to send a custom response to the client containing some scene/camera info, and it has to be per-frame and timed before the PS plugin sends out the encoded video frame. Is there a way to do this?

An option is to customize the PS plugin itself, but I don’t know how I could deploy the custom PS plugin without needing the team to re-build the whole Engine/Editor