API
Identify customer
Attach the billing user id (RevenueCat app user id, Adapty customer_user_id, Superwall user id, or Qonversion custom_user_id) so later webhooks can find the attribution. The SDK exposes this as setAppUserId() plus provider aliases like linkRevenueCatUser().
POST /ingestIdentify{ "appUserId": "rc_user_123", "attributionId": "optional" }