nssm

README

https://github.com/kirillkovalenko/nssm

Github.

https://github.com/kirillkovalenko/nssm/blob/master/README.txt

README

Accounts

The following well-known usernames do not need a password. The password parameter can be omitted when using them:

"LocalSystem" aka "System" aka "NT Authority\System"
"LocalService" aka "Local Service" aka "NT Authority\Local Service"
"NetworkService" aka "Network Service" aka "NT Authority\Network Service"
Virtual service account "NT Service\<servicename>"

https://docs.microsoft.com/en-us/windows/win32/services/networkservice-account

NetworkService Account.

https://docs.microsoft.com/en-us/windows/win32/services/localservice-account

LocalService Account.