Deserialize millisecond timestamp to java.time.Instant

Solution was to add .configure(DeserializationFeature.READ_DATE_TIMESTAMPS_AS_NANOSECONDS, false) to the ObjectMapper. Complete ObjectMapper looks like:

ObjectMapper om = new ObjectMapper()
            .registerModule(new JavaTimeModule())
            .configure(SerializationFeature.WRITE_DATE_TIMESTAMPS_AS_NANOSECONDS, false)
            .configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false)
            .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
            .configure(DeserializationFeature.READ_DATE_TIMESTAMPS_AS_NANOSECONDS, false)
            .setSerializationInclusion(Include.NON_NULL);