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

{
  "entries": [
    {
      "id": "12345",
      "type": "retention_policy",
      "policy_name": "Some Policy Name",
      "retention_length": "365",
      "disposition_action": "permanently_delete",
      "description": "Policy to retain all reports for at least one month",
      "policy_type": "finite",
      "retention_type": "non_modifiable",
      "status": "active",
      "created_by": {
        "id": "11446498",
        "type": "user",
        "name": "Aaron Levie",
        "login": "ceo@example.com"
      },
      "created_at": "2012-12-12T10:53:43-08:00",
      "modified_at": "2012-12-12T10:53:43-08:00",
      "can_owner_extend_retention": false,
      "are_owners_notified": false,
      "custom_notification_recipients": [
        {
          "id": "11446498",
          "type": "user",
          "name": "Aaron Levie",
          "login": "ceo@example.com"
        }
      ],
      "assignment_counts": {
        "enterprise": 1,
        "folder": 1,
        "metadata_template": 1
      }
    }
  ],
  "limit": 1000,
  "next_marker": "JV9IRGZmieiBasejOG9yDCRNgd2ymoZIbjsxbJMjIs3kioVii"
}