Json REST web service

While there may not be an exact tutorial example on what you are trying to do, you should be able to piece together a solution. REST is simply a set of rules you follow for your api which tell you how to structure the URL(s) you should be receiving a request on. In your case it would probably be a POST to /[resource], resource being the name of whatever entity is being sent to you (order, customer, etc...) From there once you receive the POST it will have a JSON payload. JSON is just the syntax of the object coming in, such as {"name":"bob"}. Not sure which language or framework you are working with but there is likely a good JSON parser built in. You would simply call JSON.parse on the payload and would get back an object or hash with all of the parameters from the POST, in your case the key value pairs. From there you simply store that object in the DB how you would story any other data. If you then google those three parts separately you can find code examples for pretty much any language easily.