Public Data Sources By User Api
Return an array where each entry is an object with this form:
{ username: "beau", sources: ["fitbit", "runkeeper"] }
GET /api/public-data/sources-by-member/?format=api&offset=12700
{ "count": 12701, "next": null, "previous": "https://www.openhumans.net/api/public-data/sources-by-member/?format=api&limit=100&offset=12600", "results": [ { "username": "hello88gbnet1", "sources": [] } ] }