// serverside
mp.events.add('__test__', (player, target) => {
  console.log(`First entity: ${player.type} ${player.id}`);
  console.log(`Second entity: ${target.type} ${target.id}`);
});

mp.events.addCommand('__test__', (player) => {
  player.call('__test__');
});

// clientside
mp.events.add('__test__', () => {
    mp.events.callRemote('__test__', mp.colshapes.atRemoteId(0)); // or object, or marker or other entities
});