HTTP + XML
         The following are sample HTTP requests and responses. 
            The placeholders shown need to be replaced with actual values.
POST /xml/oneway/ContactOptInRequest HTTP/1.1 
Host: api2.publicemployeeretirementassistance.com 
Content-Type: application/xml
Content-Length: length
<ContactOptInRequest xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/PeraServiceStackLibrary">
  <PhoneNumber>String</PhoneNumber>
</ContactOptInRequest>