JSON deserialisation problem: list (of item) in VB.NET

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VB

deserialization

Hello.
I have yet another JSON deserialisation problem, and it's frustrating me. I have had a previous deserialisation problem (How do I deserialise "multi-level" JSON in VB.NET?[^]), and that was solved quickly. But I followed the steps to repeat that with yet another JSON string, and it's throwing the same error. Here is the code I am trying to deserialise:

{"timestamp":1470270507172,"profileId":"e7cc8ec97b294d2484843d330f136bbd","profileName":"iProgramIt","textures":{"SKIN":{"url":"http://textures.minecraft.net/texture/f7f6f0e6a2a3d6db69a4afa9fef28ea4d56f37199277f95c1d2b5f0aaa4e2"}}}

It gets stuck on type SKIN.
Here is MY code in VB.NET.

Public Class SKIN
       Public Property url As List(Of String)
   End Class

   Public Class CAPE
       Public Property url As List(Of String)
   End Class
   Public Class PropertyX
       Public Property name As String
       Public Property value As String
       Public Property signature As String
   End Class

   Public Class Skins_Base
       Public Property id As String
       Public Property name As String
       Public Property properties As List(Of PropertyX)
   End Class
   Public Class Textures
       Public Property SKIN As List(Of SKIN)
       Public Property CAPE As List(Of CAPE)
   End Class

   Public Class Skins
       Public Property timestamp As String
       Public Property profileId As String
       Public Property profileName As String
       Public Property isPublic As String
       Public Property textures As List(Of Textures)
   End Class

Public Function GETX(ByVal Str As String) As String
       Dim wc As New System.Net.WebClient
       Return wc.DownloadString(Str)
   End Function

Deserialisation (where the error occurs):

Dim SkinsBase As String = GETX("https://sessionserver.mojang.com/session/minecraft/profile/" & obj.id)
        Dim xObj = JsonConvert.DeserializeObject(Of Skins_Base)(SkinsBase)
        Dim b As Byte() = Convert.FromBase64String(xObj.properties(0).value)
        Dim bString As String = System.Text.Encoding.UTF8.GetString(b)
        Dim b64 = JsonConvert.DeserializeObject(Of Skins)(bString)
        MsgBox(b64.textures(0).SKIN(0).url(0))

Thank you in advance.
-iProgramIt

What I have tried:

http://www.codeproject.com/Questions/1116304/How-do-I-deserialise-multi-level-JSON-in-VB-NET. Didn't solve this issue, now. Googled and nothing matches this circumstance.