тело для подписания (awpActionBody):
<v1:awpAction
	xmlns:v1="v1.awp">
	<awpId>1234</awpId>
	<actionType>CONFIRM</actionType>
	<originalDocumentSignature>....ZHuu+y/oszOcYLRJPtjIZwREGrpDNtB+..../Q==</originalDocumentSignature>
</v1:awpAction>

пример запроса по SOAP из esf.gov.kz SDK
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:v1="v1.awp">
   <soapenv:Header/>
   <soapenv:Body>
      <v1:awpChangeStatusRequest>
         <sessionId>?</sessionId>
         <awpActionInfoList>
            <!--1 or more repetitions:-->
            <awpActionInfo>
               <!--You may enter the following 6 items in any order-->
               <!--Optional:-->
               <awpActionBody>?</awpActionBody>
               <!--Optional:-->
               <awpVersion>?</awpVersion>
               <!--Optional:-->
               <awpId>?</awpId>
               <signature>?</signature>
               <signatureType>?</signatureType>
               <!--Optional:-->
               <certificate>?</certificate>
            </awpActionInfo>
         </awpActionInfoList>
      </v1:awpChangeStatusRequest>
   </soapenv:Body>
</soapenv:Envelope>