Reading NodeJS JSON encoded buffers in Python.

index.js

const j = '{"type":"Buffer","data":[93,204,151,170,0,0,194,155,10,119,139,1,10,13,41,43]}'
const buffer = Buffer.from(JSON.parse(j).data)
console.log(JSON.stringify(buffer)); // verify that a buffer is stringified as the string above by default
console.log('buffer string value : ' + buffer.toString('hex')) // concat with str 

main.py

from struct import *
import binascii
import json

json_str = '{"type":"Buffer","data":[93,204,151,170,0,0,194,155,10,119,139,1,10,13,41,43]}'

a = bytearray(json.loads(json_str)['data'])
print(binascii.hexlify(bytearray(a)))