"hwid": "8f65b16df378e7a6bece9614e1530fb2", // required. Hardware device ID used in a /registerDevice request. Can be used together with an userId to identify a user who has triggered an event.
"application": "XXXXX-XXXXX", // required, Pushwoosh application code
"event": "activityCompleted", // required, event name exactly as created in Pushwoosh Control Panel
"attributes": { // required. Leave empty if no attributes need to be passed.
"timestampUTC": 1435228403, // optional, timestamp in UTC
"timestampCurrent": 1435253603, // optional, timestamp in local time
"userId": "[email protected]", // required, a user id which is used for identification of users on multiple devices. Can be used instead of or together with an HWID. "device_type": 1 // optional