tle": "Subscribe Error Response",
            "description": "The response sent from the server upon an unsuccessful subscribe request",
            "type": "object",
            "required": ["action", "requestId", "error", "timestamp"],
            "properties": {
                "action": {
                    "enum": [ "subscribe" ],
                    "description": "The identifier for the subscription request",
                },
                "requestId": {
                    "$ref": "#/