def validateHMAC():

import hmac

import hashlib

import base64

file = open("payload.txt", "rb") # Read the payload from a file named payload.txt

payload = file.read()

secret = "4+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxuE=" # Replace this value with your own secret

signature = "e4xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxhg=" # Replace this value with your own signature

hashBytes = hmac.new(str.encode(secret), msg=payload, digestmod=hashlib.sha256).digest()

base64Hash = base64.b64encode(hashBytes)

return hmac.compare_digest(str.encode(signature), base64Hash)

print(validateHMAC())