{ "messages": [ { "id": "@alice", "message": {"text":["Hey Bob!","I'm sleepy"],"file":[{"type":"image","url":"https://example.com/image.png"}]}, "timestamp": 1705209265405 }, { "id": "@bob", "message": {"text":["OK"]}, "timestamp": 1705209565405 } ], "member": { "@alice": { "name": "Alice", "icon_url": "https://example.com/icon1.png", "bot": false }, "@bob": { "name": "Bob", "icon_url": "https://example.com/icon2.png", "bot": true } } }