jsfiddle-console example

https://github.com/eu81273/jsfiddle-console

HTML

<script src="https://cdn.jsdelivr.net/gh/eu81273/jsfiddle-console/console.js"></script>

JavaScript

jsonData =  [
      {
        "metadata": {
          "id": "vvvvvvvvvvvvv",
          "url": "cccccccccccccc",
          "created_at": "2019-09-06T08:40:41Z",
          "updated_at": "2019-09-06T13:25:46Z"
        },
        "entity": {
          "name": "app1",
          "b_enabled": false,
          "d_url": "xxxxxs"
        }
      },
        {
        "metadata": {
          "id": "vvvvvvvvvvccc",
          "url": "cccccccccccccc",
          "created_at": "2019-09-06T08:40:41Z",
          "updated_at": "2019-09-06T13:25:46Z"
        },
        "entity": {
          "name": "app2",
          "b_enabled": false,
          "d_url": "xxxxxs"
        }
      },
        {
        "metadata": {
          "id": "vvvvvvvvvvddd",
          "url": "cccccccccccccc",
          "created_at": "2019-09-06T08:40:41Z",
          "updated_at": "2019-09-06T13:25:46Z"
        },
        "entity": {
          "name": "app3",
          "b_enabled": false,
          "d_url": "xxxxxs"
        }
      },
        {
        "metadata": {
          "id": "vvvvvvvvvveee",
          "url": "cccccccccccccc",
          "created_at": "2019-09-06T08:40:41Z",
          "updated_at": "2019-09-06T13:25:46Z"
        },
        "entity": {
          "name": "app4",
          "b_enabled": false,
          "d_url": "xxxxxs"
        }
      },
        {
        "metadata": {
          "id": "vvvvvvvvvvfff",
          "url": "cccccccccccccc",
          "created_at": "2019-09-06T08:40:41Z",
          "updated_at": "2019-09-06T13:25:46Z"
        },
        "entity": {
          "name": "app5",
          "b_enabled": false,
          "d_url": "xxxxxs"
        }
    }
    ]
    
var result = {}
jsonData.forEach(x => {
result[x.entity.name]= x.metadata.id
})

console.log(result)