json - Parse and store nested array with RestKit

Question

I've iOS project which is using RestKit 0.21.0 component responsible to get, parse and store in Core Data responses from remote server. In one of the backend JSON response I have something like that:

"response": [
{
  "id": 1,
  "start_time": "10:00:00",
  "end_time": "14:00:00",
  "name": "Object name",
  "occurrences": [
    "2013-09-13T14:00:00",
    "2013-09-20T14:00:00",
    "2013-09-27T14:00:00"
  ]
},
.
.
.
]

Generally I'm able to parse and store in Core Data received objects. I've only problem with nested array occurrences.

Do you have any advices how should I properly parse and store this collection?