const { data } = await autumn.entities.get('user_123', 'ent_1');

{
  "id": "<string>",
  "name": "<string>",
  "customer_id": "<string>",
  "created_at": 123,
  "env": "<string>",
  "products": [
    {
      "id": "<string>",
      "name": "<string>",
      "group": "<string>",
      "status": "<string>",
      "canceled_at": 123,
      "started_at": 123,
      "is_default": true,
      "is_add_on": true,
      "version": 123,
      "current_period_start": 123,
      "current_period_end": 123,
      "entity_id": "<string>",
      "items": [
        {}
      ],
      "quantity": 123
    }
  ],
  "features": {},
  "invoices": [
    {
      "product_ids": [
        "<string>"
      ],
      "stripe_id": "<string>",
      "status": "<string>",
      "total": 123,
      "currency": "<string>",
      "created_at": 123,
      "hosted_invoice_url": "<string>"
    }
  ]
}