curl -i -X GET "https://api.box.com/2.0/tasks/12345/assignments" \
     -H "authorization: Bearer <ACCESS_TOKEN>"

{
  "total_count": 100,
  "entries": [
    {
      "id": "11446498",
      "type": "task_assignment",
      "item": {
        "id": "12345",
        "type": "file",
        "etag": "1",
        "sequence_id": "3",
        "name": "Contract.pdf",
        "sha1": "85136C79CBF9FE36BB9D05D0639C70C265C18D37",
        "file_version": {
          "id": "12345",
          "type": "file_version",
          "sha1": "134b65991ed521fcfe4724b7d814ab8ded5185dc"
        }
      },
      "assigned_to": {
        "id": "11446498",
        "type": "user",
        "name": "Aaron Levie",
        "login": "ceo@example.com"
      },
      "message": "Please review",
      "completed_at": "2012-12-12T10:53:43-08:00",
      "assigned_at": "2012-12-12T10:53:43-08:00",
      "reminded_at": "2012-12-12T10:53:43-08:00",
      "resolution_state": "incomplete",
      "assigned_by": {
        "id": "11446498",
        "type": "user",
        "name": "Aaron Levie",
        "login": "ceo@example.com"
      }
    }
  ]
}