Player unique id at your system that was used to create the player at Gameball
Array of product id (at your system) in which this voucher can be applied for, this should contain id's of product in case of free product voucher.
Array of Categories Ids (At your system) that the generated coupon can be applied to.
How many times the coupon can be used per customer, it is always sent by true since it is supported only to use one coupon once per customer.
How many times the coupon can be used in total, for now it is always set to 1 because coupon can be only used once.
Type of coupon, currently Gameball supports the following coupons only :
Amount in days that the coupon will be expired after
The minimum order value that the coupon can work with.