I want my asp.net web api to return json response with space in property names, currently when i am testing it using postman i am getting response in the below format.

[
  {
     "appId": 1,
     "appName": "app1"
  },
  {
     "appId": 2,
     "appName": "app2"
  }
]

But I would like my web api to return the response in the below format because in the FE i am reading the column names dynamically and displaying as it it just by converting it to uppercase

[
  {
     "appId": 1,
     "app Name": "app1"
  },
  {
     "appId": 2,
     "app Name": "app2"
  }
]

To achieve this i tried converting my model to below format.

public class MyApp
{
   public int AppId {get; set;}
   
   [JsonProperty(PropertyName = " App Name")]
   public string AppName {get; set;}
}

But still i see my Api returning response property as appName

How can i get the json property with space in between ?