redo.json

{
	"activities": [
		{
			"group_id": "87ehgiudnvijv",
			"sub_activities": [
				{
					"id": 5608536,
		      "stream_id": "d042d280-b566-11e5-8080-8001153bae6f",
		      "verb": "artist_tracking",
		      "category": "me",
		      "description": "Tracked",
		      "description_key": "tracked",
		      "timestamp": "2016-01-07T17:48:09+0000",
		      "like_count": 0,
		      "is_liked": false,
		      "actor": {
		        "user": {
		          "id": 21017358,
		          "first_name": "Xavier",
		          "last_name": "Cany",
		          "facebook_uid": "645131642",
		          "media_id": 4348122,
		          "location": "San Diego, CA"
		        }
		      },
		      "object": {
		        "artist": {
		          "id": 1647,
		          "name": "LCD Soundsystem",
		          "media_id": 3697856,
		          "on_tour": false,
		          "tracker_count": 310328
		        }
		      }
		    }
	    ]
		}
	]
}