curl -X POST https://transfer-sandbox.payven.com.tr/api/v1/transfers/bulk/create \
  -H "Authorization: Bearer $PAYVEN_TOKEN" \
  -H "Idempotency-Key: order-1001" \
  -d '{ ...payload... }'

{
  "message": "<string>",
  "is_success": true,
  "code": "<string>",
  "data": [
    {
      "source_account_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "external_id": "<string>",
      "description": "<string>",
      "recipient": {
        "holder_name": "<string>",
        "recipient_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "iban": "<string>",
        "account_number": "<string>",
        "card_details": {
          "card_token": "<string>",
          "card_number": "<string>"
        }
      },
      "amount": {
        "value": 123
      }
    }
  ]
}