Example of an Avro schema - used in https://dalelane.co.uk/blog/?p=3781

schema13.avsc

{
    "type": "record",
    "namespace": "co.uk.dalelane",
    "name": "Type13",
    "fields": [
        {
            "name": "myWord",
            "type": {
                "type": "string",
                "name": "WordThatStartsWithD",
                "namespace": "co.uk.dalelane",
                "logicalType": "words-that-start-with-D"
            }
        }
    ]
}