curl --request GET \
  --url https://test-api.sandbox.co.in/bank/virtual/accounts/{account_number}/balance \
  --header 'Authorization: <authorization>' \
  --header 'x-api-key: <x-api-key>'

{
  "code": 349,
  "timestamp": 1,
  "data": {
    "balance": 1
  },
  "transaction_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}