schema.json

{
  "type": "object",
  "properties": {
    "user": {
      "type": "object",
      "properties": {
        "id": {
          "$ref": "#/definitions/positiveInt"
        },
        "name": {
          "type": "string",
          "faker": "name.findName"
        },
        "birthday": {
          "type": "string",
          "chance": {
            "birthday": {
              "string": true
            }
          }
        },
        "email": {
          "type": "string",
          "format": "email",
          "faker": "internet.email"
        }
      },
      "required": [
        "id",
        "name",
        "birthday",
        "email"
      ]
    }
  },
  "required": [
    "user"
  ],
  "definitions": {
    "positiveInt": {
      "type": "integer",
      "minimum": 0,
      "minimumExclusive": true
    }
  }
}