I live a webhook of zoho flow and I don't know how to respond with the following json {"fulfillmentText": "Text"}

I live a webhook of zoho flow and I don't know how to respond with the following json {"fulfillmentText": "Text"}

dialogflow sending me data to the webhook, I do searches in my zoho application and at the end of my flow I need to give this answer to dialogflow ... I don't know how to configure the webhook response!

how is it done?

This is the answer I need to send back to the flow dialog after executing my flow

json {"fulfillmentText": "text"}