{
  "nodes": [
    {"id": "raw_customers", "type": "table", "name": "raw_customers"},
    {"id": "clean_customers", "type": "table", "name": "clean_customers"},
    {"id": "orders", "type": "table", "name": "orders"}
  ],
  "edges": [
    {"from": "raw_customers", "to": "clean_customers"},
    {"from": "clean_customers", "to": "orders"}
  ],
  "notes": "Sample JSON manifest representing a tiny lineage graph."
}