Set a profile image

{
    "photo": {
        "photo_id": "987-423",
        "thumbnail": {
            "height": 120,
            "url": "https://trashnothing.com/img/2018-02-02/307731-20180119_155358.90x120.jpg",
            "width": 90
        }
    },
    "user": {
        "about_me": "I used to be an accountant but then I decided to become a pirate.",
        "country": "US",
        "digest": "6_hours",
        "digest_photos": false,
        "email": {
            "address": "johndoe@example.com",
            "bouncing": false,
            "spam_stop": false,
            "verified": true
        },
        "firstname": "Jack",
        "has_password": false,
        "last_listings_view": "2018-02-15T15:04:47",
        "lastname": "Carter",
        "location": {
            "latitude": 39.766098,
            "longitude": -105.077206,
            "name": "Wheat Ridge, CO, USA",
            "radius'": 32186.88
        },
        "member_since": "2009-09-25T14:20:01",
        "post_location": {
            "latitude": 39.766098,
            "longitude": -105.077206,
            "name": "Wheat Ridge"
        },
        "post_reminders": true,
        "profile_image": "https://gravatar.com/avatar/88305a95b05b30f6cd306019ea5d88f3?s=90&r=pg&default=identicon",
        "profile_image_source": "gravatar",
        "public_name": false,
        "public_post_sources": [
            "trashnothing"
        ],
        "show_all_group_posts": true,
        "signup": "2017-11-20T04:32:06",
        "special_notices": true,
        "user_id": 119458,
        "username": "captainjack",
        "uses_fair_offer_policy": true,
        "verified": true
    }
}