Asp.Net Identity Globalization

I am trying to use globalization in my Asp.NET Identity specifically in TokenEndpointPath.

My dll versions are the following:

Microsoft.AspNet.Identity.Core - 2.0.0.0

Microsoft.AspNet.Identity.EntityFramework - 2.0.0.0

Microsoft.AspNet.Identity.Owin - 2.0.0.0

Microsoft.Owin - 3.0.1.0

For each of them I download also the pt-BR localization:

<package id="Microsoft.AspNet.Identity.Core.pt-br" version="2.2.1" targetFramework="net452" /><package id="Microsoft.AspNet.Identity.EntityFramework.pt-br" version="2.2.1" targetFramework="net452" /><package id="Microsoft.AspNet.Identity.Owin.pt-br" version="2.2.1" targetFramework="net452" /><package id="Microsoft.Owin.pt-br" version="3.0.1" targetFramework="net452" />

And I added the following line in my 

web.config

<system.web><globalization culture="pt-BR" uiCulture="pt-BR"/></system.web>

I am also using restSharp or Postman to make a few endpoints calls trying to force pt-BR language usage.

public async TaskInvalidPasswordLoginTest(){Lessor lessor;

    using (ApplicationUserManager userManager =UserManager){
        lessor =newLessor{Name="Master and Commander Lessor",Email="master-lessor@email.com",UserName="master-lessor@email.com"};

        await userManager.CreateAsync(lessor,"passwd1");}#region Execute Test Actions//Autenticate Uservar request =newRestRequest("/Token",Method.POST);
    request.AddParameter("grant_type","password");
    request.AddParameter("password","passwd12");
    request.AddParameter("username", lessor.UserName);
    request.AddHeader("Content-Type","application/x-www-form-urlencoded");IRestResponse response =Client.Execute(request);Assert.That(response.StatusCode,Is.EqualTo(HttpStatusCode.BadRequest));#endregion}

But my response is has the following content:

"{\"error\":\"invalid_grant\",\"error_description\":\"The user name or password is incorrect.\"}"

Instead of the pt-BR version. Is this supposed to happen? Any idea of what I might be doing wrong?