Feature Extraction using JSON data

[msm-prarthana-bataju]

Hi Prateek,
Could you please help me how to extract feature using JSON data.
For the reference, here is how my JSON file looks like.
Please do suggest me.

test.json
{
"directed": false,
"multigraph": true,
"graph": {},
"nodes": [
{
"surface_type": "PLANE",
"id": 0
},
{
"surface_type": "CYLINDER",
"id": 1
},
{
"surface_type": "PLANE",
"id": 2
},
{
"surface_type": "PLANE",
"id": 3
},
],
"links": [
{
"convexity": "convex",
"source": 0,
"target": 21,
"key": 0
},
{
"convexity": "convex",
"source": 0,
"target": 21,
"key": 1
},
{
"convexity": "convex",
"source": 0,
"target": 21,
"key": 2
}

]

}

Hoping for your response.
Thanking you