curl --request GET \
  --url https://api-sandbox.orum.io/deliver/balance \
  --header 'Authorization: Bearer <token>' \
  --header 'Orum-Version: <orum-version>'

{
  "balance": {
    "pending": 123,
    "available": 123,
    "updated_at": "2023-11-07T05:31:56Z"
  },
  "total_balance": {
    "pending": 123,
    "available": 123,
    "updated_at": "2023-11-07T05:31:56Z"
  }
}