to switch subscription in azure cli

Below command will list all subscriptions linked to the loggedin account.

 az account list 

Below will show the default subscription set.

az account list --query "[?isDefault]"

to switch default subscription in azure cli:

az account set --subscription "subscriptionid"

But before all that, you need to login first.

az login

REference link: https://learn.microsoft.com/en-us/cli/azure/manage-azure-subscriptions-azure-cli