Token request with http Get/Post

Hi everyone,
I'm trying to integrate a system for reading production data of photovoltaic systems with node-red. The manufacturer provided me with information on how to request the token.
Once fetched from the first request, you can use it for subsequent requests and then data.
Now with postman I can get it going, while with node-red which I don't have a lot of experience with, I can't find the right syntax to achieve the same result.
This is the data I use with postman:

Request type: POST
URL: xxxxx.com
Headers (8):
key value
Postman-Token
Content-Type application/json
Content-Length
Host
User-Agent PostmanRuntime/7.32.3
Accept /
Accept-Encoding gzip, deflate, br

body (RAW JSON):
{
"email": "xxxxxx@test.com",
"password": "xxxxxxPassword"
}

Can someone help me?
Thank you very much.

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