I'm inserting a cron job like this:
$updateFight = $db->insert('xf_cron_entry',
[
'entry_id' => 'fight' . $newBattleId,
'cron_class' => 'Battles\ILL\Cron\Fights',
'cron_method' => 'fightInsert',
'run_rules' => '{"day_type":"dom","dom":[22],"hours":[15],"minutes":[17],"battle":['...