The code changes in `main.go` update the NATS subscription logic and configuration. The `Subscribe` function now uses the `NatsHandler` struct to handle the subscription. The `NewNatsHandler` function is added to create a new instance of the `NatsHandler` with the provided configuration. The configuration values are passed to the `NatsSubscriber` constructor to set up the NATS subscription. This refactor improves the modularity and readability of the NATS subscription code.
windyboy