Simple C# Converting CouchDB document to SQL Server

I need a simple program made to deserialize a json file that I am getting from a couchdb document and insert the contents into our sql server database table. There are a few items that need to be handeled such as null entries and a conversion from base64(this is an xml string) to a regular string. I will provide the json document, the parameters for each field and the schema of the sql table once awarded. This is a quick turn project that we need done today, but is very simple.