curl --request POST \
  --url https://sandbox-api.kotanipay.com/api/v3/customer/validate/mobile-money \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "phoneNumber": "+254719399210"
}
'

{
  "success": true,
  "message": "Phone number validated successfully.",
  "data": {
    "isValid": true,
    "isSupported": true,
    "requiresInternationalization": false,
    "countryCode": "KE",
    "countryName": "Kenya",
    "callingCode": "<string>",
    "internationalNumber": "+254719399210",
    "nationalNumber": "0719399210",
    "bankName": "<string>",
    "currency": "KES",
    "message": "<string>"
  }
}