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-45
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Cache-Control: max-age=0, no-cache, no-store, must-revalidate
Content-Type: application/json
Expires: Mon, 28 Nov 2022 04:40:55 GMT
Vary: Accept

{
    "count": 48,
    "next": null,
    "previous": null,
    "results": [
        {
            "source": "direct-sharing-45",
            "name": "Nightscout Data Commons",
            "usernames": [
                "Sratty1",
                "nstanichevsky",
                "dylanleonard",
                "LongboatAline",
                "vanzaam",
                "davidwag",
                "rdskiddo",
                "DonutMaster",
                "batuhan",
                "twinning92",
                "SweetPea",
                "hhinma",
                "trusties",
                "JordanDamron",
                "mb226",
                "jcacanedo",
                "erani",
                "Zii",
                "Oceantragic",
                "victorfalmeida",
                "itsn0tm3",
                "Abby",
                "DanielCiliaUoM",
                "correcthorsebatterystaple",
                "Agniya",
                "francesco",
                "bitsy",
                "dromore1911",
                "jamual90",
                "Tara1412",
                "gil",
                "jab12",
                "cascer1",
                "jwedding",
                "Sharingdata2012",
                "samihussein",
                "r_kingman",
                "Headrush1111",
                "pianoman2",
                "egal",
                "Unidragon",
                "dparsons",
                "woodduckie",
                "Deep_Forrest",
                "Ayeletssail",
                "wangm23456",
                "wbefield",
                "tapir314",
                "allisonm",
                "Martikkala",
                "246PWD",
                "AndyS",
                "whooze",
                "bmammon",
                "ibjopenaps",
                "craigio",
                "adhocz",
                "kretch",
                "jmo121402",
                "francescaneri",
                "protatoes",
                "cdmccook",
                "vishigondi",
                "MarcelZ",
                "loxam61",
                "WealOfFyre",
                "dramageek",
                "tal8645",
                "randomdiabetic",
                "thomasemge",
                "Justinvz",
                "mydata",
                "in10city",
                "biomesh",
                "pedrop",
                "vebaba",
                "Marc78400",
                "klaatu_gort",
                "gerarddwan",
                "openaps000",
                "hasbend",
                "Dosefinder",
                "Sergio",
                "zreptil",
                "TeleRiddler",
                "sirfisch",
                "PaperT1D",
                "openaps17",
                "mike7985",
                "yeltsinxyz",
                "mhaeberli",
                "sethgagnon",
                "silver_2000",
                "ecmihai",
                "cristinav",
                "madeinnordeste",
                "Lndfrs",
                "hannesvoss",
                "Adidushi",
                "evans",
                "medimikka",
                "Sophie1",
                "novohike",
                "Dia1993",
                "Loopi67",
                "vincentb67",
                "Zuckerfisch",
                "JeDewandre",
                "Erik1988",
                "goldndel",
                "Klaus",
                "Monoid",
                "hannulan",
                "jbuckhi",
                "cwilson_gg",
                "outerform",
                "Tooraj",
                "JB1499",
                "horstao",
                "mhopwood",
                "ct20983",
                "joni01",
                "aralmeida",
                "YoloDoge",
                "A1",
                "haspden",
                "Tinilla",
                "manuelmolinaf",
                "karijoensen",
                "Standak",
                "sergiu_fintineru",
                "wollek",
                "jonprogers",
                "LLSmurf",
                "danfuerst",
                "k2s",
                "Dragan",
                "LooperRobby",
                "Alamo",
                "Philoul",
                "aholareijo",
                "thseliger",
                "cheers2",
                "aguitarpenter",
                "Barjo",
                "lifeexcellence",
                "Henst",
                "Dawnee",
                "markvader",
                "Izzy",
                "angelinadelrey",
                "qurnck3",
                "Rolfvanderplas",
                "Foo_me",
                "ImisJonas",
                "dri2009",
                "OldEnK",
                "DevNullSteve",
                "daJohnny",
                "Eni",
                "t1d_researcher",
                "dustinjjohnson",
                "AlphaGammaBeta0",
                "sweston4",
                "arnoudmol",
                "Tdazzle",
                "RafaRoggia",
                "Igor1990",
                "Sakura"
            ]
        }
    ]
}