[
  "r of set",
  {
    "required": 2,
    "set": [
      [
        "sig",
        {
          "pubkey": "A4wG9Q8f2TofEfiw7n47HuZkuLqtol2GxmRGYz2lWSSG"
        }
      ],
      [
        "sig",
        {
          "pubkey": "AsX+MCrQoIdkQ7S7/7G91dM9eM95yimCWYODug/H7Xwj"
        }
      ]
    ]
  }
]