Headers: Array:

 Request:
 scope(0)=EXPRESS_CHECKOUT&scope(1)=ACCESS_BASIC_PERSONAL_DATA&scope(2)=AUTH_CAPTURE&callback=https://example.com/success.html&requestEnvelope.errorLanguage=en_US

Response:
 responseEnvelope.timestamp=2020-05-20T16:58:06.222-07:00&responseEnvelope.ack=Success&responseEnvelope.correlationId=f747cb1654273&responseEnvelope.build=identitypermissionserv-0.0.4_20200408010243337&token=TF20AAHcUWIom4uK2%2FnldiQ5KSs5y5kghBwxpJWZHhaThtlwutcx5EIT%2FIhE