Webhook - Integromat - transfer of a data array

Hello and good morning!

I would like to transfer data to Integromat via a webhook.

I did - and it works well!

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let wpURL := url("https://hook.integromat.com/webhooknummer", {
'First Name': "First01",
'Last Name': "Last01"
});
http("Post", wpURL);

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BUT - what I really want is to send multiple data sets in an array to Integromat.

So:

Array name: customer data

First01, Last01

First02, Last02

... etc.

AND unfortunately I can't do that with the syntax ... I'm pretty desperate :-)