For a subscription brand, a new subscriber is worth far more than a one-time buyer. Subscriber lifetime value compounds with every renewal, while a one-time purchase is just that. Send first subscription orders to Meta as a separate conversion event, so acquisition campaigns optimise for new subscribers rather than any purchase.

Create a custom Purchase event based on Recharge data that is sent to Meta only on first-time subscriptions.

Set the new event as your campaign's optimization goal, and Meta optimizes towards people likely to start a susbcription, not just make a purchase.
Recharge syncs order subscriptions data to Shopify via tags, so Littledata can read it on every order and pass it to Meta alongside the purchase.
