Set below request XML.
XML Format:
<?xml version="1.0"?>
<?qbxml version="8.0"?>
<QBXML>
<QBXMLMsgsRq onError="stopOnError">
<CustomerModRq requestID="15">
<CustomerMod>
<ListID>9D84-1182061418</ListID>
<EditSequence>1481791846</EditSequence>
<BillAddress>
<Addr1>addr1</Addr1>
<Addr2>addr2</Addr2>
<City>City</City>
<State>State</State>
<PostalCode>382007</PostalCode>
</BillAddress>
</CustomerMod>
</CustomerModRq>
</QBXMLMsgsRq>
</QBXML>