If you want to unsubscribre from all newsletters,
set type = none
set newsletter_id = 0
Arguments
| client_id |
integer, required |
| company_id |
integer, required |
| newsletter_id |
integer |
| type |
required, in: basic, none, all, current, followup, mailer, system |
| newsletter_type |
string |
| email_id |
integer |