"passwords" : {
        "A1_owner" : ["infogulch:passABC","JohnRambozo:pass2"],
        "A1_builder" : ["howdy", "mat^2"],
        "A2_owner" : ["howdy:pass123"],
        "A2_builder" : ["infogulch"],
        ...
    },
    "rights" : {
        "A1_owner" : [..., "rollback"]  // rollback would have to limit it
        ...
    },