curl --request POST \
  --url https://api.bullring.finance/v1/ramp/{subaccountId}/banking/offramp/initiate \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '{
  "bankAccountId": "343bb162-d0ae-46ef-a5bb-13505eb52c89",
  "amount": 88
}'

{
  "success": true,
  "data": {
    "id": "d79c9799-bb8e-4c17-9d5a-79fefa34484f",
    "lightningInvoice": "lntbs190270n1p5jtvf2pp53pk7mdfvc9d8szp7m0kpym4q5j8axwy6zk7j8ylk03j6vn24cv6sdqqcqzpuxqzfvsp5phce46p7sk0dyejc2wnn0c0vcehdwa8p4fugj734rvy6eed7g2ds9qxpqysgqlas9q8el7l57vn7ht84tqha22c53s5797uqtv70lsn55xa9rhe53l0z2ashzeq9jcz54wkczzyqznqeunthfw4cnyjp3v2y7vha6yxspe0u76h",
    "lightningInvoiceId": "d0abc66e-9ab3-43b7-bb07-09465a048d54",
    "targetAmount": 88,
    "targetCurrency": "brl",
    "lightningAmount": 1656,
    "lightningCurrency": "stablesats",
    "exchangeRate": 0.18822915501882292,
    "lightningFee": 0,
    "withdrawalFee": 0.64,
    "targetAmountReceivable": 87.34,
    "totalFees": 0.64,
    "bankAccount": {
      "id": "343bb162-d0ae-46ef-a5bb-13505eb52c89",
      "bankName": null,
      "accountId": "667.136.083-96",
      "currency": "BRL"
    },
    "expiresAt": null,
    "status": "pending",
    "createdAt": "2025-11-25T13:37:46.829Z"
  },
  "message": "Lightning invoice generated. Pay to receive funds in your bank account."
}