Update app information from values provided in args parameter as stringified JSON

args can contain this properties:

'app_id': { 'required': true, 'type': 'String'}, //ID of the app to change information

'name': { 'required': false, 'type': 'String' },// new app name

'category': { 'required': false, 'type': 'String' },// new app category ID

'timezone': { 'required': false, 'type': 'String' },//new timezone

'country': { 'required': false, 'type': 'String' } //new app country