Update a graph object

{
  "data":{
    "attributes": {
      "private": true
    },
    "type":"graph"
  }
}

{
  "data": {
    "attributes": {
      "private": false,
      "nodes": [
        {
          "type":"domain",
          "entity_id":"www.hooli.com",
          "x":-18,
          "y":65,
          "text":"Root Node",
          "index":0
        },
        {
          "type":"relationship",
          "entity_id":"relationships_resolutions_wwwhoolicom",
          "x":-56,
          "y":42,
          "index":1
        },
        {
          "type":"ip_address",
          "entity_id":"8.8.8.8",
          "x":-64,
          "y":0,
          "index":2,
          "fx":3.3,
          "fy":4.4
        },
        {
          "type":"file",
          "entity_id":"131f95c51cc819465fa1797f6ccacf9d494aaaff46fa3eac73ae63ffbdfd8267",
          "x":-64,
          "y":0,
          "index":2,
          "fx":3.3,
          "fy":4.4
        },
        {
          "type":"url",
          "entity_id":"1a0556926f7e76419d12e4c6ad52f10388af11f2689f6c0fb6111a2b85f131de",
          "x":-64,
          "y":0,
          "index":2,
          "fx":3.3,
          "fy":4.4
        }
      ],
        "links":[
          {
            "source":"www.hooli.com",
            "target":"relationships_resolutions_wwwhoolicom",
            "connection_type":"resolutions"
          },
          {
            "source":"relationships_resolutions_wwwhoolicom",
            "target":"8.8.8.8",
            "connection_type":"resolutions"
          }
        ],
          "position": {
            "x":897,
              "y":388,
                "scale":"1"
          },
            "graph_data": {
              "description": "Hooli.com graph"
            }
    },
      "type": "graph"
  }
}