In future we want our store to have a catalog including life packs, cosmetics, badges etc.
To avoid complicating the client, if we defined items in the catalog such as '3 lives pack', '5 lives pack', is there a suitable Cloud Code API hook where we could update the User Entities as you suggest when the user completes a purchase?

We want to implement a lives system in our game, similar to these screenshots from Candy Crush Saga.
Ideally this would be in the marketplace - having a Coins virtual currency and a Lives VC,
But it doesn't seem to be possible. What alternative implementation would work?
thanks

I'd also like to take advantage of the tournament's Custom JSON to store the file ID of a JPG image to be displayed in the game UI to promote the tournament (example: in December we'd ask users to play a Christmas-themed tournament and the image would be snowy) but I don't see how to edit the Custom JSON through the portal - is that only possible through with Cloud Code?

A little more progress - although passing a version ID of -1 to GetTournamentStatus() produces an error if a no tournament is running, I can instead call GetGlobalLeaderboardVersions() and then call GetTournamentStatus() individually for each returned version.

If runtime discovery is difficult, then I could use a fixed leaderboardId such as "monthly_event"

I experimented with that, and when a tournament is over I can call:
TournamentService.ViewReward("monthly_event", -1) and in the response see that tClaimedAt is 0

but to actually claim the reward with ClaimTournamentReward I have to pass a specific versionId - how can I figure out which versions of the leaderboard the user has unclaimed rewards for? That's particularly difficult if a new iteration of the monthly event has already started.

More generally, we're evaluating switching from Firebase for a music game with thousands of songs. In the Firestore database it's easy to have leaderboards with secondary indexes for player country/region. I don't think Braincloud supports that so we're going to need tens of thousands of leaderboards with IDs such as "song_456_US" and "song_1234_CA". For that reason, I need to avoid any situation where I have to list and filter all leaderboards because it will be (I expect) too expensive ($) and/or too slow.

I should add, this is part of our evaluation of Braincloud as a potential BaaS for our game, so I'm trying to map our requirements onto Braincloud features.

In the context of https://help.getbraincloud.com/en/articles/3248895-introduction-to-braincloud-global-tournaments and especially in the situation "If you implement concurrent tournaments, offer a means to cycle between them", how can I programatically query the current active tournaments?