curl --request GET \
  --url https://api.myrouter.example/api/v1/billing/balance-transactions/{transaction_id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "<string>",
    "amount": {
      "value": "<string>",
      "currency": "<string>"
    },
    "balance_after": {
      "value": "<string>",
      "currency": "<string>"
    },
    "created_at": "2023-11-07T05:31:56Z",
    "description": "<string>",
    "related_generation_id": "<string>",
    "related_checkout_session_id": "<string>",
    "invoice_id": "<string>"
  },
  "request_id": "<string>"
}