curl --location 'https://api.dev.pynil.com/v1/transactions/bank-cashout/initiate' \
--header 'Authorization: Basic <encoded-value>' \
--header 'X-Signature: <api-key>' \
--header 'X-Timestamp: <api-key>' \
--header 'Content-Type: application/json' \
--data '{
"walletNumber": "101000001",
"amount": 100,
"timestamp": "2026-01-08",
"notes": "Test request"
}'{
"success": true,
"message": "OTP sent successfully",
"statusCode": 200,
"data": {
"nilpayTranRef": "333"
}
}