new_contents: 
  class SubscriptionInfo(object):
  
      def __init__(self, raw_data):
          self._raw_data = raw_data
  
      @property
      def id(self):
          return self._raw_data.get('id')
  
      @property
      def estimated_delivery_days(self):
          return self._raw_data.get('estimated_delivery_days')
  
      @property
      def subscription_list_price(self):
          return self._raw_data.get('subscription_list_price')
  
      @property
      def tos(self):
          return self._raw_data.get('tos')
  
      @property
      def tos_link(self):
          return self._raw_data.get('tos_link')
  
      @property
      def licenses(self):
          return self._raw_data.get('licenses')
  
      @property
      def licenses_link(self):
          return self._raw_data.get('licenses_link')
  
      @property
      def rights(self):
          return self._raw_data.get('rights')
  
subject: Add SubscriptionInfo class