curl --request GET \
  --url https://api.example.com/v1/transactions/{entity_id}

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "item_id": "<string>",
  "sku": "<string>",
  "region": "<string>",
  "sales_value": "<string>",
  "gross_profit": "<string>",
  "stock_after_sale": "<string>",
  "regular_price": "<string>",
  "promo_type": "<string>",
  "zone_price": "<string>",
  "external_transaction_id": "<string>",
  "unit_cost": "<string>",
  "discount_rate": "<string>",
  "currency": "<string>",
  "tax_rate": "<string>",
  "transaction_type": "<string>",
  "store_id": "<string>",
  "transaction_timestamp": "2023-11-07T05:31:56Z",
  "quantity": "<string>",
  "selling_price": "<string>"
}