tp://json-schema.org/draft-04/schema#",
            "title": "Subscription Notification",
            "description": "The response sent from the server upon an unsuccessful subscribe request",
            "type": "object",
            "required": ["subscriptionId", "value", "timestamp"],
            "properties": {
                "subscriptionId": {
                    "$ref": "#/definitions/subscriptionId"
                },
                "value": {
                    "$ref": "#/definitions/v