diff --git a/python/schemes/Amazon.py b/python/schemes/Amazon.py
index 0af5723..98c7f65 100644
--- a/python/schemes/Amazon.py
+++ b/python/schemes/Amazon.py
@@ -1,7 +1,4 @@
-import urllib.parse
-payload = f'widevine2Challenge={urllib.parse.quote(base64.b64encode(cdm.service_certificate_challenge).decode())}&includeHdcpTestKeyInLicense=true'
-service_cert = await corsFetch(licUrl, "POST", licHeaders, payload, "json")
-service_cert = service_cert['widevine2License']['license']
-payload = f'widevine2Challenge={urllib.parse.quote(getChallenge("b64", service_cert))}&includeHdcpTestKeyInLicense=true'
+payload = loadBody("json")
+payload['licenseChallenge'] = getChallenge("b64")
 licence = await corsFetch(licUrl, "POST", licHeaders, payload, "json")
-licence = licence['widevine2License']['license']
+licence = licence['widevineLicense']['license']