Blinking Light Node Red Flow

Has anyone got an example flow for sending a command to blink/alert/flash a hue bulb via MQTT?

Using the standard flash via HASS in Node-Red changes the bulb brightness and colour. It seems you can do this via MQTT and setting the state. However I’m a Node-Red novice and can’t seem to get the JSON right for setting the state of a bulb and using the alert feature via MQTT.