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import hmac, hashlib

def verify_signature(secret, body, timestamp, signature):
    payload = f'{timestamp}.'.encode() + body
    expected = hmac.new(secret.encode(), payload, hashlib.sha256).hexdigest()
    return hmac.compare_digest(expected, signature)

secret = 'whsec_test'
body = b'{"id":"evt_1"}'
ts = '1700000000'
expected = hmac.new(secret.encode(), f'{ts}.'.encode() + body, hashlib.sha256).hexdigest()
print(verify_signature(secret, body, ts, expected))

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