Facebook persistent sub menu doesn't work

     

I try to implement submenu in my persistent menu for my Facebook Bot chat page and i got this result when trying to do a CURL request : (#100) The parameter setting_type is required"


I follow the CURL request of the Facebook Documentation. I successfully created a persistent menu but not manage to include submenus :


$response = [   "persistent_menu"=>[   [   "locale" => "default"   "composer_input_disabled" => true   "call_to_actions" => [   [   "title" => "My Account