patch
https://api.instamojo.com/v2/store/orders/32568/cancel/
Use to Cancel an Order that was placed on the merchant's Instamojo Online Store.
32568 in the API URL is the Order ID against which you want to update the Order details.
The Payload data needs to be passed in form-data format.
The param that you need to be using for this API endpoint to function is the "id" param.