curl --request POST \
  --url https://api.sendpadi.com/api/v1/merchant/vas/internet \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --header 'X-Api-Key: <api-key>' \
  --header 'X-Signature: <x-signature>' \
  --header 'X-Timestamp: <x-timestamp>' \
  --data '
{
  "planId": "smile_data",
  "phoneNumber": "08012345678"
}
'

const options = {
  method: 'POST',
  headers: {
    'X-Timestamp': '<x-timestamp>',
    'X-Signature': '<x-signature>',
    'Idempotency-Key': '<idempotency-key>',
    'X-Api-Key': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({planId: 'smile_data', phoneNumber: '08012345678'})
};

fetch('https://api.sendpadi.com/api/v1/merchant/vas/internet', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.sendpadi.com/api/v1/merchant/vas/internet"

payload = {
    "planId": "smile_data",
    "phoneNumber": "08012345678"
}
headers = {
    "X-Timestamp": "<x-timestamp>",
    "X-Signature": "<x-signature>",
    "Idempotency-Key": "<idempotency-key>",
    "X-Api-Key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "success": true,
  "message": "OK",
  "data": {
    "transactionId": "vas_internet_001",
    "status": "completed"
  }
}

{
  "success": false,
  "message": "Invalid request signature",
  "error": true,
  "errorCode": "MERCHANT_AUTH_SIGNATURE_INVALID"
}