NATS has the notion of a system account which is a designated account for operations and monitoring of the server, cluster, or supercluster. Although there is an implicit system account created on the server, there are no users associated with it, by default.
This example showcases the minimal configuration required to define
a user associated with the default system account. This will allow us
to run administrative commands using the nats CLI.
For the decentralized JWT authentication method, configuring the system account is a slightly different process that will be highlighted in a separate example.