SystemUpdateSpec
                                SystemUpdateSpec                            
                            Contains the parameters required to perform update operation on system
JSON Example
                                    {
    "maxAllowedDomainsInSubscription": 0
}
            
            
                                    integer As int32
                
                                    As int32
                
            
        
        
                maxAllowedDomainsInSubscription            
                            Optional
            
            
        new limit of amount of domains in subscription mode
