{ "$schema": "http://json-schema.org/draft-07/schema#", "title": "MyStruct", "type": "object", "required": [ "my_bool", "my_int" ], "properties": { "my_bool": { "type": "boolean" }, "my_int": { "type": "integer", "format": "int32" }, "my_nullable_enum": { "allOf": [ { "$ref": "#/definitions/MyEnum" } ], "nullable": true } }, "definitions": { "MyEnum": { "anyOf": [ { "type": "object", "required": [ "StringNewType" ], "properties": { "StringNewType": { "type": "string" } } }, { "type": "object", "required": [ "StructVariant" ], "properties": { "StructVariant": { "type": "object", "required": [ "floats" ], "properties": { "floats": { "type": "array", "items": { "type": "number", "format": "float" } } } } } } ] } } }