[
  "r of set",
  {
    "required": 1,
    "set": [
      [
        "sig",
        {
          "pubkey": "A6fa4SKvUhcJvNgAnLk1HaEWDZ24NwBO2dmKEGtjEI7D"
        }
      ],
      [
        "sig",
        {
          "pubkey": "AtGaUONI5bV31WVCnoI6XbWmVZJyHfuAHABls2bMwcC4"
        }
      ]
    ]
  }
]