curl --request POST \
  --url https://api.balansas.com/functions/v1/customer-api/virtual-accounts \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "accountName": "<string>",
  "masterFiatAccountId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "endUserId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "umbrellaLinkId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'

{
  "data": {
    "id": "b4e2d3f5-6c7e-8f9a-0b1c-2d3e4f5a6b7c",
    "end_user_id": "9c1d2e3f-4a5b-6c7d-8e9f-0a1b2c3d4e5f",
    "master_fiat_account_id": "a3f1c2e4-5b6d-7e8f-9a0b-1c2d3e4f5a6b",
    "fr_virtual_account_id": "vacc_7mNp2QxR9Lk",
    "account_name": "Acme Payroll VA",
    "currency": "GBP",
    "status": "active",
    "fr_owner_business_id": "busi_8Jh2KdLm5Qx",
    "iban": "DE89370400440532013000",
    "bic": "NWBKGB2L",
    "bank_name": "Modulr FS Limited",
    "account_holder_name": "Acme Ltd",
    "bank_country": "GB",
    "account_number": "31926819",
    "sort_code": "601613",
    "created_at": "2026-05-28T11:02:09.456Z",
    "updated_at": "2026-05-28T11:02:09.456Z"
  }
}