Is it possible to extend ion.cast/event, alert format

Hi, we’ve wired up our cloud instances with the open telemetry agent and it’s working quite well. One thing we want to add now is the trace/span id to log messages. with log4j/etc it’s just a matter updating the log format to pull it from the MDC. i’d like to do something similar with cast, add a trace id field to the map if it’s available. But as far as i can tell there aren’t any extension/customization points.