Backing up a Clash of Clans account on iPad without the game center

I use the same apple ID across an iPhone and an iPad, but play a separate Clash of Clans account.

The first account, my iPhone, is registered on the game center.

On the iPad, I did not activate the game center, in order to prevent it synching data from my iPhone.

Unfortunately, I have run into a problem with the iPad, and I need to perform a system restore. In the process, I will naturally loose all my application data.

Is there any way to keep my second Clash of Clans account backed up? Or am I doomed to loose my progress with the factory reset?

Supercell has a newish feature. Supercell id. If you set up a Supercell id it will save your village online. To transfer the game center village to Supercell id, check out this help page https://supercell.helpshift.com/a/clash-of-clans/?s=supercell-id&f=migrating-your-game-accounts-to-supercell-id&p=web