webhooks return objects as strings
In a note hook (reduced and redacted):
{
"object_attributes": {
"attachment": null,
"author_id": 1012,
"commit_id": null,
"created_at": "2016-08-23 13:55:35 UTC",
"id": 156333,
"line_code": null,
"note": "<contents>",
"noteable_id": 68660,
"noteable_type": "Issue",
"original_position": null,
"position": "{\"old_path\":null,\"new_path\":null,\"old_line\":null,\"new_line\":null,\"base_sha\":null,\"start_sha\":null,\"head_sha\":null}",
"project_id": 541,
"st_diff": null,
"system": false,
"type": null,
"updated_at": "2016-08-23 13:55:35 UTC",
"updated_by_id": null,
"url": "<redacted>"
}
}