Extrinsic 4284-1

{
  "heartbeat": {
    "blockNumber": 4282,
    "sessionIndex": 71,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x903ab868a55f633fe978bfd9daa8278d89c7f92db9d0a320bbf2aa8bdbcec82a54a898cd1a1796aa660bd97ad6ef7c29dff6373fde8f1be1c6ae285a80d30188"
}