从生成的 token 解析上传策略

JmTcjiVWsoRxql3OA2krgoW-Fu9bzBZZGCd2lXem:hnuOE5rHuQjyfTIBTH06IaFY0ME=:eyJzY29wZSI6ImF0ZXN0IiwiZGVhZGxpbmUiOjE1MDY5Mzg5NDF9

 base64 -D <<< eyJzY29wZSI6ImF0ZXN0IiwiZGVhZGxpbmUiOjE1MDY5Mzg5NDF9
{"scope":"atest","deadline":1506938941}