Dotnet

var req = new ODataRequest
{
   Path = "/Root/Content/IT",
   ActionName = "GetRelatedItems",
   Select = new[] { "Id", "Path", "Type" },
};
var body = @"models=[{
    ""permissionLevel"": ""AllowedOrDenied"",
    ""memberPath"": ""/Root/IMS/Public/Editors"",
    ""permissions"": [""Save""],
    ""explicitOnly"": true}]";
var result = await RESTCaller.GetResponseStringAsync(req, HttpMethod.Post, body);
Console.WriteLine(result);