JSON Schema Sample

{
   "$schema": "http://json-schema.org/draft-04/schema#",
   "title": "Product",
   "description": "A product from Acme's catalog",
   "type": "object",
   "properties": {
      "firstName": {
        "type": "string",
        "maxLength": 50
      },
      "middleName": {
        "type": "string",
        "maxLength": 50
      },
      "lastName": {
        "type": "string",
        "maxLength": 50
      },
      "name": {
        "type": "string",
        "maxLength": 255
      }
   },
  
   "required": ["firstName", "lastName"]
}