Return an array where each entry is an object with this form:

{ source: "fitbit", name: "Fitbit", usernames: ["beau", "madprime"] }

GET /api/public-data/members-by-source/?source=direct-sharing-43
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Cache-Control: max-age=0, no-cache, no-store, must-revalidate
Content-Type: application/json
Expires: Sat, 11 Jul 2020 05:05:32 GMT
Vary: Accept

{
    "count": 48,
    "next": null,
    "previous": null,
    "results": [
        {
            "source": "direct-sharing-43",
            "name": "OpenAPS Data Commons",
            "usernames": [
                "friendocrino",
                "vpinty",
                "Adrian",
                "Sratty1",
                "AminfiBerlin",
                "nstanichevsky",
                "mdoneda1",
                "LongboatAline",
                "vanzaam",
                "dylanleonard",
                "tuuli",
                "rssfed23",
                "timocm",
                "Jarvis532",
                "anna_jaey",
                "rdskiddo",
                "jfire",
                "CM",
                "fidoman",
                "batuhan",
                "chsbicunurse",
                "knoxville",
                "ma_ber",
                "zwell",
                "twinning92",
                "wmol4",
                "QueenD",
                "telani",
                "Nuria",
                "Marchan",
                "redxyz",
                "JohnDoe",
                "JordanDamron",
                "clove1126",
                "thoyh",
                "jcacanedo",
                "aleas091190",
                "erani",
                "Elly98",
                "sdlkkcdsmlsdk21",
                "BGdoc",
                "itsn0tm3",
                "chaosbiber",
                "Laura_E",
                "Stressedoutdad",
                "Henst",
                "JakobtheCat",
                "twain47",
                "markvader",
                "Ailbhe",
                "susanna",
                "dromore1911",
                "roxybike80",
                "jamual90",
                "AndyS",
                "Shane",
                "kdata",
                "jab12",
                "andiblas",
                "taximeow",
                "jetplane07",
                "ptinson",
                "crushingT1D",
                "cyborgpancreas",
                "mgranberry",
                "jamesmansfield",
                "tal8645",
                "plumpypig",
                "amoskane",
                "Tornado14",
                "derbythecat",
                "correcthorsebatterystaple",
                "246PWD",
                "kdisimone",
                "ibjopenaps",
                "NequalsOne",
                "lix40",
                "j14157w",
                "dramageek",
                "davidwag",
                "Rausku",
                "Kachy",
                "mydata",
                "francescaneri",
                "sthacher",
                "Rachel",
                "Stavlor",
                "ramonimo",
                "saw2112",
                "Snickers72",
                "allisonm",
                "WealOfFyre",
                "theflyingfraction",
                "jdunn42",
                "zreptil",
                "dustinjjohnson",
                "garykidd",
                "Johnnyharper",
                "monicaaj",
                "cameronrenwick",
                "sethgagnon",
                "carptj",
                "PedanticAvenger",
                "Pancreas2021",
                "wangm23456",
                "Martikkala",
                "cdmccook",
                "mrshapir",
                "musicman0329",
                "devils_marbles",
                "qurnck3",
                "slussier",
                "denise2",
                "in10city",
                "Bender1061",
                "cbrenner",
                "trusties",
                "vmaxuploads",
                "MarcelZ",
                "loxam61",
                "infectioustimes",
                "Unagimami",
                "phillybuzzter",
                "Ayeletssail",
                "esteward",
                "stew",
                "BmoreNightScout",
                "Deep_Forrest",
                "cascer1",
                "Shaggydog",
                "quizzmaster",
                "Tucker617",
                "Bobbles",
                "Ashley85",
                "davinche",
                "KS615",
                "thomasemge",
                "537038",
                "walker0",
                "Humblebee79",
                "pgpalmer",
                "bmammon",
                "woodduckie",
                "lightnerd",
                "Elena",
                "RedCyclist",
                "bokayaps",
                "Kayki",
                "peterlynton",
                "roch_openaps",
                "fortred2",
                "triplem",
                "ecmihai",
                "egal",
                "Justinvz",
                "Unidragon",
                "vebaba",
                "tapir314",
                "alternateal",
                "fastduke",
                "Kyearick",
                "youneverwalkalone",
                "Bucnel",
                "hichame_yessou",
                "silver_2000",
                "endafarrell",
                "ColenMcA",
                "hannesvoss",
                "mkitchy",
                "mogren",
                "sirfisch",
                "Ingolo",
                "dbl3raf",
                "Oceantragic",
                "PaperT1D",
                "lkc",
                "protatoes",
                "shanselman",
                "andrewgood",
                "Sergio",
                "Lndfrs",
                "laserbirdflame",
                "cristinav",
                "Raguram",
                "dfuerstenau",
                "Benjmamm",
                "bhauck",
                "No_one_20",
                "jundiliu",
                "novohike"
            ]
        }
    ]
}