MediasetInfinity and license

[neofita]

Hi
I am try to find the key for some video, however, I would like to do it locally
I am not even able to run locally the license URL, when I copied the link with the cURL and run it locally I received an error

Failed to read challenge for [getRawWidevineLicense]

I was expected to be able to it the easy task and I am really lost, it seems that the server what a previous request in order to return something, since it is the same request
Someone can point me in the right direction?

Thank you

[neofita]

The error is error code HTTP/1.1 422 Unprocessable Entity
I don't see why, it must be the same request

[neofita]

Using the curlconvert in the header it was adding

'Content-Type': 'application/x-www-form-urlencoded'

removing it I was able to get an answer