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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 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']