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Events allow the convenient usage of the EVM logging facilities, which in turn can be used to “call” callback functions in the user interface of an app, which listens for these events. [You can find more info on events here.](solidity.readthedocs.io/en/v0.4.21/contracts.html#events)
It would be great to have an easy way to subscribe to events that occur within smart contracts in web3swift's `Utils/`.
This functionality spans many use cases since developers consistently want to reflect UI changes based on smart contract event updates in real-time.
## Acceptance Criteria
 Clear and concise code that makes it easy to listen to smart contract events and handles subscriptions to those events
 Document sample usage of how to use your code