Returns a Graph object.
{
  "data": {
    "attributes": {
      "graph_data": {
        "description": "Hooli.com investigation"
      },
      "links": [
        {
          "connection_type": "resolutions",
          "source": "www.hooli.com",
          "target": "relationships_resolutions_wwwhoolicom"
        },
        {
          "connection_type": "resolutions",
          "source": "relationships_resolutions_wwwhoolicom",
          "target": "8.8.8.8"
        }
      ],
      "private": false,
      "creation_date": 1530006951,
      "position": {
        "y": 388,
        "x": 897,
        "scale": "1"
      },
      "nodes": [
        {
          "index": 0,
          "entity_id": "www.hooli.com",
          "text": "Root Node",
          "y": 65,
          "x": -18,
          "type": "domain"
        },
        {
          "y": 42,
          "index": 1,
          "entity_id": "relationships_resolutions_wwwhoolicom",
          "type": "relationship",
          "x": -56
        },
        {
          "index": 2,
          "entity_id": "8.8.8.8",
          "fx": 3.3,
          "fy": 4.4,
          "y": 0,
          "x": -64,
          "type": "ip_address"
        },
        {
          "index": 2,
          "entity_id": "131f95c51cc819465fa1797f6ccacf9d494aaaff46fa3eac73ae63ffbdfd8267",
          "fx": 3.3,
          "fy": 4.4,
          "y": 0,
          "x": -64,
          "type": "file"
        },
        {
          "index": 2,
          "entity_id": "1a0556926f7e76419d12e4c6ad52f10388af11f2689f6c0fb6111a2b85f131de",
          "fx": 3.3,
          "fy": 4.4,
          "y": 0,
          "x": -64,
          "type": "url"
        }
      ]
    },
    "type": "graph",
    "id": "g3ad78ce6c21ae675e81ac376a6fc016c37befa6dc87484b95a2b069f8d04ef44",
    "links": {
      "self": "https://www.virustotal.com/api/v3/graphs/g3ad78ce6c21ae675e81ac376a6fc016c37befa6dc87484b95a2b069f8d04ef44"
    }
  }
}