Utl_http.get_response returns unreadable characters in first execution

utl_http.read_text of response from a webservice request returns unidentified characters after two lines for the first execution of sqlplus connection

Below is the response i get .. Help how to fix the issue .

Content-Type:       

application/xop+xml;charset=utf-8;type="text/xml"

Content-Transfer-Encoding:  

8bit

Content-ID: <28a69667-9b6f-410f-aa8c-2c0ea70ecf53>

<?xml version="1.0"

encoding="utf-8" ?>

<env:Envelope                                              

xmlns:env="http://schemas.xmlsoap.org/soap/envelope/"                          

xmlns:wsa="http://www.w3.org/2005/08/addressing"><env:Header><wsa:Action>http://

xmlns.oracle.com/apps/financials/commonModules/shared/model/erpIntegrationServic

e//ErpIntegrationService/submitESSJobRequestResponse</wsa:Action><wsa:MessageID>

urn:uuid:325f9dfa-1c80-4bde-9060-3ea913f50e4b</wsa:MessageID></env:Header><env:B