I checked the forms, and there is the Default, as well as 1 for US & Canada.
Code Below:
theRecord.setValue( { fieldId: 'shipaddresslist', value: null } );
var shipaddrSubrecord = theRecord.getSubrecord( { fieldId: 'shippingaddress' } );
shipaddrSubrecord.setValue( { fieldId: 'addressee', value: request['shippingaddress']['addr1'] }) ;
shipaddrSubrecord.setValue( { fieldId: 'addr1', value: request['shippingaddress']['addr2'] }) ;
shipaddrSubrecord.setValue( { fieldId: 'addr2', value: request['shippingaddress']['addr3'] }) ;
shipaddrSubrecord.setValue( { fieldId: 'addrPhone', value: request['shippingaddress']['addrPhone'] }) ;
shipaddrSubrecord.setValue( { fieldId: 'city', value: request['shippingaddress']['city'] }) ;
shipaddrSubrecord.setValue( { fieldId: 'country', value: request['shippingaddress']['country'] }) ;
shipaddrSubrecord.setValue( { fieldId: 'state', value: request['shippingaddress']['state'] }) ;
shipaddrSubrecord.setValue( { fieldId: 'zip', value: request['shippingaddress']['zip'] }) ;