after some trying, I got what I wanted!
In the header section adding the Content Type mad the trick.
Microsoft should add some more documentation to the Web.Contents function anyway.
Thanks All!
Roberto
body =
"{
““examples””: [
{
““Input1"”: ““password reset””
}
]
}”,
output = Web.Contents(url, [Headers=[#"Content-Type"="application/json"], Content=Text.ToBinary(body)]),
//
Source = Json.Document(output)
in
Source