python
from itsdangerous import TimedSerializer
serializer = TimedSerializer('my_secret_key', expires_in=3600)
data = {'username': 'example'}
signed_data = serializer.dumps(data)
print('Signed Data:', signed_data)
try:
verified_data = serializer.loads(signed_data)
print('Verified Data:', verified_data)
except BadSignature:
print('Invalid Signature')
