When users subscribe to my Viber PA I make a request to https://chatapi.viber.com/pa/get_user_details
And get back strange user.name
[user] => Array
(
[id] => ***
[name] => Subscriber
[avatar] => http://dl-media.viber.com/1/share/2/long/bots/generic-avatar%402x.png
[primary_device_os] => iOS 12.0.1
[api_version] => 7
[viber_version] => 9.9.1.28
[device_type] => iPhone7,2
)
Subscriber? And it is not only one user! What is it? Any suggessions?