Extrinsic 3079-1

{
  "heartbeat": {
    "blockNumber": 3077,
    "sessionIndex": 51,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x92a4483bb0db2dde9a4d77a0c4d92618b514e2728752dc595130e868bbb77320211a818c746ee383ef6b0d61f2dce5b29d19c3afc34246dcb9f6ddb0a992748f"
}