{
  "request_id": "commercial-create-001",
  "property": {
    "external_ref": "CRM-COM-001",
    "department": "commercial",
    "marketing_status": "available",
    "status_id": 1,
    "trans_type_id": 4,
    "published": true,
    "display_address": "Unit 3, Business Park, Birmingham",
    "address_1": "Unit 3",
    "address_2": "Business Park",
    "town": "Birmingham",
    "postcode": "B1 1AA",
    "price": 32000,
    "rent_frequency": "PA",
    "property_type": "Commercial Property",
    "property_subtype": 251,
    "size_min": 1800,
    "size_max": 1800,
    "area_size_unit_id": "sqft",
    "price_per_unit": 18,
    "summary": "Office unit available on flexible terms.",
    "description": "Self-contained office premises with parking and transport links.",
    "features": ["Parking", "Flexible lease", "Kitchenette"]
  }
}