Unsubscribe from Object

{
  "node_type": "objectoperation_removesubscription",
  "properties": {
    "object_type": "<string>",
    "object_id": "<string>",
    "user_selection": [],
    "is_object_id_dynamic": false
  },
  "name": "Unsubscribe from project",
  "description": "<string>",
  "ref": "<string>"
}