Difference between AFNetworking and Postman response with JSON request - objective-c

Question

Does anyone have any idea why I'm getting this when I POST with AFNetworking (wrong):
[ '0',
'1',
'7',
'0',
'2',
'94',
'0',
'3',
'41',
'0',
'4',
'5',
'0',
'5',
'51',
'0',
'6',
'3',
'0',
'7',
'40',
'0',
'8',
'18',
'0',
'9',
'12',
'0',
'10',
'10',
'1',
'11',
'9',
'2',
'12',
'4',
'2',
'13',
'17',
'2',
'14',
'25',
'2',
'15',
'16',
'2',
'16',
'15',
'2',
'17',
'21',
'2',
'18',
'35',
'2',
'19',
'37',
'2',
'20',
'34',
'2',
'21',
'32',
'3',
'22',
'96' ]
but I get this when I POST with postman (correct)?
[ { riderId: 7, placeId: 1, eventCategoryId: 0 },
{ riderId: 94, placeId: 2, eventCategoryId: 0 },
{ riderId: 41, placeId: 3, eventCategoryId: 0 },
{ riderId: 5, placeId: 4, eventCategoryId: 0 },
{ riderId: 51, placeId: 5, eventCategoryId: 0 },
{ riderId: 3, placeId: 6, eventCategoryId: 0 },
{ riderId: 40, placeId: 7, eventCategoryId: 0 },
{ riderId: 18, placeId: 8, eventCategoryId: 0 },
{ riderId: 12, placeId: 9, eventCategoryId: 0 },
{ riderId: 10, placeId: 10, eventCategoryId: 0 },
{ riderId: 9, placeId: 11, eventCategoryId: 1 },
{ riderId: 4, placeId: 12, eventCategoryId: 2 },
{ riderId: 17, placeId: 13, eventCategoryId: 2 },
{ riderId: 25, placeId: 14, eventCategoryId: 2 },
{ riderId: 16, placeId: 15, eventCategoryId: 2 },
{ riderId: 15, placeId: 16, eventCategoryId: 2 },
{ riderId: 21, placeId: 17, eventCategoryId: 2 },
{ riderId: 35, placeId: 18, eventCategoryId: 2 },
{ riderId: 37, placeId: 19, eventCategoryId: 2 },
{ riderId: 34, placeId: 20, eventCategoryId: 2 },
{ riderId: 32, placeId: 21, eventCategoryId: 2 },
{ riderId: 96, placeId: 22, eventCategoryId: 3 } ]
That's a node.js response btw. Same endpoint and json data being posted on both.
Thoughts?
It's just a simple NSMutableDictionary that I'm passing. Here is my AFNetworking submission code:
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager POST:#"http://192.168.20.230:3000/api/v1/test" parameters:submission success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"responseObject: %#", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", [error localizedDescription]);
}];

Answer 1

Figured it out. Apparently I needed to set the requestSerializer.
manager.requestSerializer = [AFJSONRequestSerializer serializer];
I thought that json was AFNetworking's default so setting that would be redundant. Ah well.
Full working code:
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.requestSerializer = [AFJSONRequestSerializer serializer];
[manager POST:#"http://192.168.20.230:3000/api/v1/test" parameters:submission success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"responseObject: %#", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", [error localizedDescription]);
}];