Important Attributes	Description
`email`	The email address of the recipient of the referral link (the friend).
`customer.first_name`	The name of the customer who shared their referral link.
`referral_link`	The URL of the customer’s referral link being shared.
`from`	The email address of the customer who shared their referral link.

{
    "topic": "swell/referral/share",
    "name": "Swell Referral Share",
    "email": "sally.jane@gmail.com",
    "from": "john.smith@gmail.com",
    "customer": {
        "total_spend_cents": 0,
        "total_purchases": 0,
        "perks_redeemed": 4,
        "last_purchase_at": null,
        "email": "john.smith@gmail.com",
        "referred_by": "jane.smith@gmail.com",
        "points_earned": 675,
        "points_balance": 675,
        "points_expire_at": null,
        "first_name": null,
        "last_name": null,
        "last_seen_at": "2016-10-15T18:43:24.000Z",
        "third_party_id": "4302977345",
        "referral_code": {
            "code": "x09u052",
            "shares": 0,
            "facebook_shares": 0,
            "twitter_shares": 0,
            "email_shares": 0,
            "emails_sent": 0,
            "emails_viewed": 0,
            "links_clicked_from_email": 0,
            "links_clicked_from_twitter": 0,
            "links_clicked_from_facebook": 0,
            "orders": 1,
            "amount_cents": 3000,
            "average_amount_cents": 3000,
            "expires_at": null,
            "expired": false,
            "completed_referral_customers": [{
                "email": "hillary.clinton@gmail.com",
                "first_name": "Hillary",
                "last_name": "Clinton",
                "referral_points_contributed": 0,
                "last_seen_at": "2016-10-15T16:38:20.000Z"
            }],
            "email": "john.smith@gmail.com",
            "unique_clicks": 1,
            "total_clicks": 1
        }
    },
    "referral_link": "http://rwrd.io/x09u052"
}