sync changes

sync.json

  "rooms": {
    "joined": {
      "!726s6s6q:example.com": {
        "state": {
          "m.room.member": {
            "@alice:example.com": {
              "sender": "@alice:example.com",
              "type": "m.room.member",
              "state_key": "@alice:example.com",
              "content": {"membership": "join"},
              "origin_server_ts": 1417731086795,
              "event_id": "$66697273743031:example.com"
            }
          }
        },
        "timeline": {
          "events": [
            {
              "sender": "@alice:example.com",
              "type": "m.room.message",
              "unsigned": {"age": "124524", "txn_id": "1234"},
              "content": {
                "body": "I am a fish",
                "msgtype": "m.text"
              },
              "origin_server_ts": 1417731086797,
              "event_id": "$74686972643033:example.com"
            }
          ],
          "limited": true,
          "prev_batch": "t34-23535_0_0"
        }
      }
    }