VendingMachineUpgradeInitiated (address , uint256 )
[topic 0]:0x424e3c8894757dd6fd019d0d8065b19c7e49af137aeb89a275ed3d2435025a96
0x0000000000000000000000009c070027cdc9dc8f82416b2e5314e11dfb4fe3cd0000000000000000000000000000000000000000000000000000000063cf3a4f