HiBob to PowerBI API Connection via Web

Hi,

I'm trying to connect to HiBob's Post API by using PowerBI.

I have the following post curl request from HiBob:

curl --request POST \
--url https://api.hibob.com/v1/people/search \
--header 'accept: application/json' \
--header 'authorization: Basic XXXXX' \
--header 'content-type: application/json' \
--data '
{
"fields": [
"root.id",
"root.firstName",
"root.surname",
"root.email",
"work.site",
"work.department",
"work.manager"
],
"showInactive": true,
"humanReadable": "string"
}
'
I added the above to PowerBI by following the below steps:
Select "Get Data", "Web", and then select "Advanced". I then added the curl request as below:

However, when I click "OK", I get the below error:

Can anyone help by telling me what I'm doing wrong please?