Fibaro HC2 Variable.... pull JSON data into HA

I currently have a script on my Fibaro HC2 that pulls in a JSON string and stores that in a variable.

I’d like to be able to pull that JSON string from the variable in to HA and then have all of the different results available but I’m struggling to figure out how it’s done.

I know I can use the restful setup in configuration.yaml but not quite sure where to start.