[
  "r of set",
  {
    "required": 1,
    "set": [
      [
        "sig",
        {
          "pubkey": "A257Ydg24LQrjpFudHyWDvjA0LkHVfcwZRqih+l2McxB"
        }
      ],
      [
        "sig",
        {
          "pubkey": "Aomcf81ipLNuDSYdsrFfXa0EXW5SwFMgr2tJGg8bw8Jv"
        }
      ]
    ]
  }
]