curl --request GET \
  --url https://rest.compute.cudo.org/v1/billing-accounts/{billingAccountId}/spend/details \
  --header 'Authorization: <api-key>'

{
  "spend": [
    {
      "amount": {
        "value": "<string>"
      },
      "description": "<string>",
      "projectId": "<string>",
      "quantity": 123,
      "unit": "UNIT_UNKNOWN",
      "unitAmount": {
        "value": "<string>"
      }
    }
  ]
}