Update user feature settings

REQUIRED SCOPES <code>[‘users:write’]</code><br>Each user in the system has personal feature settings related to choosing a convenient UI for the interaction within a conversation. <br><br>This API endpoint allows for setting a flag for a specific feature setting, such as send a message by a click of the ‘Send’ button or the ‘Enter’ button on the keyboard. <br><br>Through this API request, the user can save such personal settings and preferences.