JSON Webservice

I need a C# WCF web service that connects to a SQL Server database, retrieves all rows from a single table or view based on a list of fields passed in as parameters and returns the output as JSON. This should be a generic SOAP service that can be called by any application that can read the WSDL. An example web service call to the database would be RetrieveData(TABLE_OR_VIEW_NAME, FIELD_NAMES[]) where TABLE_OR_VIEW_NAME represents a single table or view in the database and FIELD_NAMES[] is an array of string that contains all the fields to be included in the query. There should also be an option to include all the fields without specifying every one of them. So for the standard microsoft Northwind DB RetrieveData("Products",["ProductID","SupplierID","UnitPrice","Discountinued"]) or RetrieveData("Orders",["ALL"]) (where all represents all the fields). The returned output needs to be JSON. Minimum requirements are Visual Studio 2012 or 2013 with C# - Framework 4.0 or higher