A critical application exports its security audit logs in a highly customized JSON format that includes dynamic keys. For example, instead of a fixed key like 'session_id', the key might be 'session_uuid 12345' where '12345' is a random suffix. Similarly, 'user_account_X' and 'user_account_Y' might represent different user types, each with its own nested attributes. An XSIAM Data Flow needs to extract these dynamic values and standardize them into fixed fields like 'session _ identifier' and 'user_type', 'username'. Which Data Flow techniques would be most effective?