

        {
            "$schema": "http://json-schema.org/draft-04/schema#",
            "title": "Subscribe Success Response",
            "description": "The response sent from the server upon a successful subscription request",
            "type": "object",
            "required": ["action", "requestId", "subscriptionId", "timestamp"],
            "properties": {
                "action": {
                    "enum": [ "subscribe" ],
                    "description": "The identifier for the