[
  "r of set",
  {
    "required": 1,
    "set": [
      [
        "sig",
        {
          "pubkey": "ApTu4u/QFw+kgBWp6ogIruKCClmRbDp+ZnGwvnuUwSb+"
        }
      ],
      [
        "sig",
        {
          "pubkey": "A1+x3BiLdb8Cl7AhT1Vp9CN8/r7Fr2RHivdSH6pyL+zX"
        }
      ]
    ]
  }
]