Customize link block OK?

Question

Classmates

Is it possible to customize this block in OK (put your own picture, text)? After all, if not, then no one will guess that this is a link to the game ... I saw it in other posts, but apparently not published by the games.
Block: c2n.me/3kzefKw
Thank you.

Answer 1

The link to the game must work with a similar code (approved apps only; only one per post).
{ "type": "app-ref", "appId": <id приложения> }

Answer 2

In method FAPI.UI.postMediatopic method has an app block for this.