Import JSON Canvas file to Obsidian

What I’m trying to do

I have a JSON Canvas file with a simple flow to test. this file was created outside Obsidian. Now I try to bring the file into Obsidian canvas. So, I saved it as .canvas file in obsidian
However when I try to open the canvas file in obsidian, the file shows no diagrams, although the file saved has json syntax.

I checked for documentation. it says " JSON Canvas can be implemented freely as an import, export, and storage format for [any app or tool]"(JSON Canvas — Apps and tools). there are no videos in YT or proper documentation on how one can achieve the import of JSON canvas to Obsidian.

Anyone has tried it?