// 1 to display as high-priority and bypass the user's quiet hours, or
// 2 to also require confirmation from the user
token: 'API/KEY token' // optional
// add other than configurated token to the call
url, // optional - a supplementary URL to show with your message
url_title, // optional - a title for your supplementary URL, otherwise just the URL is shown
device, // optional - your user's device name to send the message directly to that device, rather than all of the user's devices
timestamp // optional - a Unix timestamp of your message's date and time to display to the user, rather than the time your message is received by our API