Extrinsic 28334-1

{
  "heartbeat": {
    "blockNumber": 28333,
    "sessionIndex": 472,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x6e281287f7073d2920e4ed93835eb0dc545d47309b05e2b41e343a240ac8a2643085b3dd866cb80918fb7f4207b7b391accb249a020a595f9fce4cdbf2be768f"
}