01-social_content_doc.json

{
     "_id": 12345,
     "_type": "tweet",
     "text": "welcome to #MongoDBWorld!",
     "twitter_user": "mongodb"
}

02-campaign_doc.json

{
     "_id": "mongodbworld_campaign",
     "name": "MongoDB World",
}

03-campaign-content-join.json

{
     "campaign_id": "mongodbwolrd_campaign",
     "content_id": 12345
}

04-social_content_with_campaign.json

{
     "_id": 12345,
     "_type": "tweet",
     "text": "welcome to #MongoDBWorld!",
     "twitter_user": "mongodb",
     "campaigns":	["mongodbworld_campaign"]
}