Is it possible to set custom params which will get passed to our own server by adivery server-to-server callback?

[wizigon]

Coming here with some experience in using IronSource. With IronSource, on the mobile app side, we can set some custom data to its SDK and those data will be then passed to our own server via a server-to-server callback initiated by IronSource server.
I am wondering if there is such custom data in Adivery?