mamba/libmamba/tests/data/validation/root copy.json

{
  "signatures": [
    {
      "keyid": "foo",
      "sig": "..."
    }
  ],
  "signed": {
    "_type": "root",
    "roles": {
      "root": {
        "keyids": ["foo"],
        "threshold": 1
      }
    }
  }
}