c# - ASP.NET WebAPI - How do I receive Base64 encoded binary from JSON post?

Question

I want to send a BLOB to my API. I've got a model with two properties: Id (int), Blob (byte[])... How is this received by the WebAPI controller? Will it recognize the model and convert the Base64 encoded BLOB from the JSON into a byte[]? Currently I'm able to receive the Id, but not the Blob (it was sent through XHR without any problems)