Returns every record in a subscription's lineage, most recently updated first — one entry
per change to quantity, billing term, price, or product.

Use this endpoint to see the individual records behind a subscription. GET /subscriptions/{subscriptionId} returns only the most recent record, so this is the way
to look up a specific historical record.

Supply the original subscription ID — the id returned by GET /subscriptions or
GET /subscriptions/{subscriptionId}. Unlike those endpoints, this one does not resolve
the ID of a later record in the lineage.