sample.json

{
  "title": "contact",
  "type": "object",
  "definitions": {
    "address": {
      "id": "address",
      "type": "object",
      "properties": {
        "street": {
          "type": "string"
        },
        "city": {
          "type": "string"
        },
        "state": {
          "type": "string"
        },
        "zipcode": {
          "type": "integer"
        }
      }
    }
  }, 
  "properties": {
    "home-address": {
      "$ref": "#/definitions/address"
    },
    "work-address": {
      "$ref": "#/definitions/address"
    },
    "name": {
      "type": "string"
    },
    "phones": {
      "type": "array",
      "items": {
        "title": "phone",
        "type": "object",
        "properties": {
          "country-code": {
            "type": "string"
          },
          "area-code": {
            "type": "string"
          },
          "number": {
            "type": "string"
          }
        }
      }
    },
    "email-address": {
      "type": "array",
      "items": {
        "type": "string"
      }
    }
  }
}