Extrinsic 28786-1

{
  "heartbeat": {
    "blockNumber": 28785,
    "sessionIndex": 479,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x2c1054bd3e746688c86911273c3b3e1cb11ddfa7a9efdcc8210f502a24092c339549bfc87c7afb35364c8d3e2c3c33f5e07bb7d98f852ac4157bbcc3e88f7689"
}