di

type App struct {
	Config *Config
}

type Config struct {
	RpcUrl          string `envconfig:"RPC_URL" default:"https://eth-mainnet.g.alchemy.com/v2/7q07HgmNB4AvgtnWTJF0uKgXmHIPpC-e"`
	WalletSecretKey string `envconfig:"WALLET_SECRET_KEY"`
	ContractAddress string `envconfig:"CONTRACT_ADDRESS"`
}