{"comment":{"id":"1","timestamp":"2018-10-25T00:00:00Z","messages":[{"body":{"text":"Comment 1."}}]}}
{"comment":{"id":"2","timestamp":"2018-10-25T00:00:00Z","messages":[{"body":{"text":"Comment 2"}}]}}
{"comment":{"id":"3","timestamp":"2018-10-25T00:00:00Z","messages":[{"body":{"text":"Comment 3"}}]}}
{"comment":{"id":"1","timestamp":"2018-10-30T00:00:00Z","messages":[{"body":{"text":"Comment 4 (with duplicate ID 1)."}}]}}
{"comment":{"id":"4","timestamp":"2018-10-30T00:00:00Z","messages":[{"body":{"text":"Comment 5"}}]}}