POST https://api.banka.bot/v1/crypto/internal-transfers.400 invalid_request.curl --location '/v1/crypto/internal-transfers' \
--header 'Idempotency-Key: 4f1c9d2e-8a37-4b56-9f0e-1d2c3b4a5968' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{
"external_id": "transfer_2026_0818_01",
"from": "main",
"to": "payout",
"amount": "1000.00"
}'{
"transfer_id": "tr_9KL4WD72",
"external_id": "transfer_2026_0818_01",
"status": "completed",
"from": "main",
"to": "payout",
"asset": "USDT",
"amount": "1000.00",
"created_at": "2026-08-18T17:10:00Z"
}