Creates a subscriber. You must create the associated budget and notification before you create the subscriber.
See https://www.paws-r-sdk.com/docs/budgets_create_subscriber/ for full documentation.
budgets_create_subscriber(AccountId, BudgetName, Notification, Subscriber)[required] The accountId that is associated with the budget that you want to
create a subscriber for.
[required] The name of the budget that you want to subscribe to. Budget names must be unique within an account.
[required] The notification that you want to create a subscriber for.
[required] The subscriber that you want to associate with a budget notification.