pocket.m

// self.heldStoryPocketID – NSString containing the integer of the Pocket item ID grabbed from the API

NSError *error;
NSArray *actions = @[@{@"action": @"delete", @"item_id": self.heldStoryPocketID}];
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:actions options:kNilOptions error:&error];
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
NSDictionary *args = @{@"actions": jsonString};

[[PocketAPI sharedAPI] callAPIMethod:@"send" withHTTPMethod:PocketAPIHTTPMethodPOST arguments:args handler:^(PocketAPI *api, NSString *apiMethod, NSDictionary *response, NSError *error) {
    if (error) {
        // error
    } else {
        // remove story from data source, reload
        // data in collection view, show notification
    }
}];