[
  "r of set",
  {
    "required": 1,
    "set": [
      [
        "sig",
        {
          "pubkey": "A7QIfLTKHk/pwRWhmh9o1p3rZ7gHDcdrR7pnn8/uftSB"
        }
      ],
      [
        "sig",
        {
          "pubkey": "ApUMsbY2yMu/dy21A6ImSjLdU+0Pxm4iguRFf1k7eQAx"
        }
      ]
    ]
  }
]