Extrinsic 26735-1

{
  "heartbeat": {
    "blockNumber": 26733,
    "sessionIndex": 445,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x46c4da5b90835c3f729becf3de34067e5480cb86258b7666d120990330b0be696798e0e0dc6b0514c9e024f938cf688291010d3c48191ab01f3bc6f55bdeac8b"
}