{
  "type":"object",
  "$schema": "http://json-schema.org/draft-04/schema",
  "id": "http://jsonschema.net",
  "$ref": "http://localhost/system/trackedObject.schema",
  "properties":{
    "_tenantId":{
      "ref": "tenant",
      "type":"objectid",
      "required":true,
      "default":"000000000000000000000000",
      "editorOnly": true
    }
  }
}