curl --request GET \
  --url https://api.leanrails.com/v1/balance_transactions/{id} \
  --header 'Authorization: Basic <encoded-value>'

{
  "id": "btxn_xxx",
  "object": "balance_transaction",
  "amount": 123,
  "fee": 123,
  "net": 123,
  "currency": "<string>",
  "type": "<string>",
  "status": "available",
  "available_on": 123,
  "reporting_category": "<string>",
  "created": 123,
  "livemode": true,
  "description": "<string>",
  "source": "<string>",
  "exchange_rate": 123,
  "fee_details": [
    {}
  ]
}