Moving the design source of truth out of Figma into JSON

I’m working with a company that held their design system in Figma but now wants Figma to be a consumer of a JSON source of truth.

Figma will be used as a playground to design system updates but the components in Figma will come from JSON.

I’ve been wondering about bridging this change between design and tech. It’s going to be a big change for designers. Any advice?