Visualizer 
{
    "value": "loading",
    "previousValue": "",
    "event": {},
    "previousEvent": {},
    "context": {
        "id": ":R1m:"
    },
    "done": false,
    "tags": [],
    "nextEvents": [
        "IMG.LOADED",
        "IMG.ERROR",
        "SRC.CHANGE",
        "IMG.UNMOUNT"
    ],
    "changed": false
}