public interface IEntity
{
  String getName();

  List<ISubEntity> getSubEntities();
}

public interface ISubEntity
{
  String getSomething();

}

{"name":"SomeName","subEntities":[{"something":"SomeSomething"}]}

{
  "changedEntity": "IEntity",
  "deletedProperties": [
    "subEntities"
  ],
  "addedProperties": [
    {
      "name": "exoticName",
      "type": "String",
      "defaultValue": null
    }
  ],
  "changedProperties": [
    {
      "name": "name",
      "type": "SomeEnum",
      "defaultValue": "DEFAULT"
    }
  ]
}