como filtrar datos de este json : {'nextPage': None, 'items': [{'id': 'bind:CQQUIGRUA3GSX0H1XOWG:USER_WAS_ASSIGNED_TO_AGENT'

json = {
  "nextPage": None,
  "items": [
    {
      "id": "bind:CQQUIGRUA3GSX0H1XOWG:USER_WAS_ASSIGNED_TO_AGENT",
      "description": "User was assigned to an agent.",
      "key": "bind:CQQUIGRUA3GSX0H1XOWG:USER_WAS_ASSIGNED_TO_AGENT",
      "name": "User Assigned to Agent"
    },
    {
      "id": "bind:CQQUIGRUA3GSX0H1XOWG:USER_WAS_UNASSIGNED_FROM_AGENT",
      "description": "User was unassigned from an agent.",
      "key": "bind:CQQUIGRUA3GSX0H1XOWG:USER_WAS_UNASSIGNED_FROM_AGENT",
      "name": "User Unassigned from Agent"
    },
    {
      "id": "bind: