code: def parse_ddo(ont_id: str, serialized_ddo: str or bytes) -> dict:
          
          if len(serialized_ddo) == 0:
              return dict()
          if isinstance(serialized_ddo, str):
              stream = StreamManager.get_stream(bytearray.fromhex(serialized_ddo))
          elif isinstance(serialized_ddo, bytes):
              stream = StreamManager.get_stream(serialized_ddo)
          else:
              raise SDKException(ErrorCode.params_type_error('bytes or str parameter is required.'))
          reader = BinaryReader(stream)
          try:
              public_key_bytes = reader.read_var_bytes()
          except SDKException:
              public_key_bytes = b''
          try:
              attribute_bytes = reader.read_var_bytes()
          except SDKException:
              attribute_bytes = b''
          try:
              recovery_bytes = reader.read_var_bytes()
          except SDKException:
              recovery_bytes = b''
          if len(recovery_bytes) != 0:
              b58_recovery = Address(recovery_bytes).b58encode()
          else:
              b58_recovery = ''
          pub_keys = OntId.parse_pub_keys(ont_id, public_key_bytes)
          attribute_list = OntId.parse_attributes(attribute_bytes)
          ddo = dict(Owners=pub_keys, Attributes=attribute_list, Recovery=b58_recovery, OntId=ont_id)
          return ddo
docs: This interface is used to deserialize a hexadecimal string into a DDO object in the from of dict.
  
          :param ont_id: the unique ID for identity.
          :param serialized_ddo: an serialized description object of ONT ID in form of str or bytes.
          :return: a description object of ONT ID in the from of dict.