{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "MyEnum",
  "oneOf": [
    {
      "type": "string",
      "enum": [
        "Included2"
      ]
    },
    {
      "type": "object",
      "required": [
        "Included1"
      ],
      "properties": {
        "Included1": {
          "type": "number",
          "format": "float"
        }
      },
      "additionalProperties": false
    }
  ]
}