Altering Json output in Drupal - drupal

Question

I am outputing a json document from a view that looks like this:
[
{
"NewsTitle": "asdas",
"ItemDescription": "asdasdasd\r\n",
"NumofViews": "3",
"Likes": "0",
"PostDate": "10 Mar, 2016",
"ImageUrl": "6_n_0.jpg",
"NewsType": "8",
"ShareURL": "",
"VideoURL": "https://www.youtube.com/",
}
]
I want to remove the brackets in the beginning to be outputed in this form :
{
"menu": {
"NewsTitle": "asdas",
"ItemDescription": "asdasdasd\r\n",
"NumofViews": "3",
"Likes": "0",
"PostDate": "10 Mar, 2016",
"ImageUrl": "6_n_0.jpg",
"NewsType": "8",
"ShareURL": "",
"VideoURL": "https://www.youtube.com/",
}
}
This is the configuration i am using:
in Views:
FORMAT
Format:JSON data document | Settings
FIELDS
in Format:JSON data document | Settings
Root object name
*empty*
The name of the root object in the JSON document. e.g nodes or users or forum_posts
Top-level child object
*empty*
The name of each top-level child object in the JSON document. e.g node or user or forum_post
Field output
Normal *chosen*
Raw
For each row in the view, fields can be output as either the field rendered by Views, or by the raw content of the field.
Plaintext output *selected*
For each row in the view, strip all markup from the field output.
Remove newlines
Strip newline characters from the field output.
JSON data format
Simple *selected*
MIT Simile/Exhibit
To be consumed by jqGrid
What object format will be used for JSON output.
JSONP prefix
If used the JSON output will be enclosed with parentheses and prefixed by this label, as in the JSONP format.
Content-Type
Default: application/json *selected*
text/json
application/javascript
The Content-Type header that will be sent with the JSON output.
Views API mode
With Views API mode the JSON will embedded as normal content so normal page processing is used. Leave it unchecked when JSON should be printed directly to the client.
Object arrays
Outputs an object rather than an array when a non-associative array is used. Especially useful when the recipient of the output is expecting an object and the array is empty.
Numeric strings
Encodes numeric strings as numbers.
Numeric strings *selected*
Encodes large integers as their original string value.
Pretty print *selected*
Use whitespace in returned data to format it.
Unescaped slashes *selected*
Don't escape forward slashes /.
Unescaped unicode
Encode multibyte Unicode characters literally (default is to escape as \uXXXX).