POST /v1/phone-numbers/buy

curl -X POST https://api.vonative.com/v1/phone-numbers/buy \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "phone_id": "pn-abc123-..."
  }'

{
  "success": true,
  "data": {
    "id": "pn-abc123-...",
    "phone_number": "+2348098765432",
    "friendly_name": "Lagos Line 3",
    "country_code": "NG",
    "status": "active",
    "organization_id": "org-uuid-1234",
    "is_available": false,
    "created_at": "2025-01-10T08:00:00Z"
  },
  "message": "Phone purchased from pool."
}