sample use ./bin/latency-tester -ws ws://stage.mainnet.rpcpool.com -grpc stage.mainnet.rpcpool.com:80 -account 9wFFyRfZBsuAha4YcuxcXLKwMxJR43S7fPfQLusDBzvT
or
go run ./cmd/latency-tester -ws ws://stage.mainnet.rpcpool.com -grpc stage.mainnet.rpcpool.com:80 -account 9wFFyRfZBsuAha4YcuxcXLKwMxJR43S7fPfQLusDBzvT