สัญญา

{
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "title": { "type": "string", "description": "Contract title" },
    "party_1": { "type": "string", "description": "First party legal name" },
    "party_2": { "type": "string", "description": "Second party legal name" },
    "effective_date": { "type": "string", "description": "Effective date" },
    "end_date": { "type": "string", "description": "Expiry or end date" },
    "value": { "type": "number", "description": "Contract value" }
  }
}