You can create subscribe devices to different unique channel names, then you can send notification containing required payload to the device using the channel to which other device is subscribed.
//subscribing to channel
ParsePush.subscribeInBackground("Channel_Name");
//getting installed devices
ParseQuery pushQuery = ParseInstallation.getQuery();
//query for getting devices with channel name
pushQuery.whereEqualTo("channels", "Channel_Name");
ParsePush push = new ParsePush();
push.setQuery(pushQuery);
push.setMessage("Your message payload");
push.sendInBackground();
You can subscribe multiple devices to same channel, but in this case when notification is send , it will be sent to all devices subscribed to a particular channel.
For more info: https://parse.com/docs/android/guide#push-notifications