Return the client accounts associated with the user's manager account.

    Returns:
      list List of ManagedCustomer data objects.

def GetAccounts(self):
    """Return the client accounts associated with the user's manager account.

    Returns:
      list List of ManagedCustomer data objects.
    """
    selector = {
        'fields': ['CustomerId', 'CanManageClients']
    }

    accounts = self.client.GetService('ManagedCustomerService').get(selector)

    return accounts['entries']