I usually store in database the failed message prior to retry, so you end up seeing all data (with the failed transport configured with doctrine)

but here for your issue in raw logs, perhaps adding a logger->debug($message) with the data can be useful indeed, and after let monolog config handle the case that debug log are streamed or not (to not flood logs if unwanted)

or as well mimicking what the workflow component has, a listener to audit that can be activated if needed

It only message_id, I would like to have the entire message

With this message :

class MyMessage {
    public function __construct(public int $companyId) {}
}

I would like to see somewhere :

["company_id" => 2]