Conversion Flow:
* User clicks on the tracking URL
* User install the app and open it
* Install postback is triggered
* User login or signups using OTP
* User purchase a order with takeaways (New/Old)
* Purchase carryout postback is triggered (Payable event)
* User purchase a order with delivered address (NewOld)
* Purchase delivery postback is triggered (Payable event)
* Payment will be made only for conversions meeting KPI
