parse push notification send and receive url

i want to ask about how to change text that i send use parse push notification become thumbnail of that text (the text is url)?

example if i send youtube url, the chat bubble will show as that youtube link thumbnail and can be clicked.

and i want to ask too, are there any tutorial about parse push notification to send current user location when user click location button on chat?

here is my code to send parse push notification for appear on chat bubble:

PFPush *push = [[PFPush alloc] init];
[push setQuery:pushQuery];
[push setMessage:text];
[push sendPushInBackground];

regards.