{
"age": 242352,
"content": {
"version" : 0,
"call_id": "12345"
},
"origin_server_ts": 1431961217939,
"event_id": "$WLGTSEFSEF:localhost",
"type": "m.call.hangup",
"room_id": "!Cuyf34gef24t:localhost",
"user_id": "@example:localhost"
}