curl --request POST \
  --url https://api.linkio.world/transactions/v2/brl/initiate_onramp \
  --header 'Content-Type: application/json' \
  --header 'ngnc-sec-key: <api-key>' \
  --data '
{
  "amount": "<string>",
  "wallet_id": "<string>",
  "stables": "USDC"
}
'

{
  "status": "Success",
  "message": "Quote ticket created successfully",
  "ticket_id": "ticket_123abc",
  "payment_code": "000201010212...",
  "validity": "5 minutes",
  "qrcode_url": "data:image/png;base64,..."
}