Nested Items in a SOAP Header

I'm trying to integrate with a SOAP call where the only credentials in the header is the current datetime:

<soapenv:Header>
<sec:Credentials>
     <sec:Created>2024-03-12 17:44:34Z</sec:Created>
</sec:Credentials>
</soapenv:Header>

How do include that information in the header?  I'm calling the webservicequery, but I can't figure out how to include that header information.  I would guess I would use a wsHttpHeaderField, but how to I make it nested with the two layers of information?

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