Creating httpPOST based upon a provided SOAP Message sample

Pretty new to this, but I have a customer who has given me a sample SOAP Message and wants me to convert it to httpPOST. I have the endpoint and the token, but I am having trouble getting the right syntax (including getting the token into the headers).

The reference I'm using is at https://community.workday.com/sites/default/files/file-hosting/productionapi/index.html

The SOAP is

<?xml version="1.0" encoding="utf-8"?>
<env:Envelope
    xmlns:env="http://schemas.xmlsoap.org/soap/envelope/"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
    <env:Header>
        <wsse:Security env:mustUnderstand="1">
            <wsse:UsernameToken>
                <wsse:Username>username@src3</wsse:Username>
                <wsse:Password
                    Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText">some pwd</wsse:Password>
            </wsse:UsernameToken>
        </wsse:Security>
    </env:Header>
      <env:Body>
        <wd:Change_Work_Contact_Information_Request
            xmlns:wd="urn:com.workday/bsvc"
            wd:version="v35.0">
            <wd:Business_Process_Parameters>
                <wd:Auto_Complete>true</wd:Auto_Complete>
                <wd:Run_Now>true</wd:Run_Now>
                <wd:Comment_Data>
                    <wd:Comment>Update work email By Dallas Ray</wd:Comment>
                </wd:Comment_Data>
               
            </wd:Business_Process_Parameters>
            <wd:Change_Work_Contact_Information_Data>
                <wd:Person_Reference>
                    <wd:ID wd:type="Employee_ID">11111</wd:ID>
                </wd:Person_Reference>
                
                <wd:Event_Effective_Date>2020-10-14</wd:Event_Effective_Date>
                <wd:Person_Contact_Information_Data>
                    <wd:Person_Email_Information_Data wd:Replace_All="true">
                        <wd:Email_Information_Data wd:Delete="false">
                            <wd:Email_Data>
                                <wd:Email_Address>something@domain.com</wd:Email_Address>
                            </wd:Email_Data>
                            <wd:Usage_Data wd:Public="true">
                                <wd:Type_Data wd:Primary="true">
                                    <wd:Type_Reference>
                                        <wd:ID wd:type="Communication_Usage_Type_ID">WORK</wd:ID>
                                    </wd:Type_Reference>
                                </wd:Type_Data>
                            
                            </wd:Usage_Data>
                            
                            
                        </wd:Email_Information_Data>
                    </wd:Person_Email_Information_Data>
 
                </wd:Person_Contact_Information_Data>
            </wd:Change_Work_Contact_Information_Data>
        </wd:Change_Work_Contact_Information_Request>
    </env:Body>
</env:Envelope>

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Thank you in advance for any assistance!