Extrinsic 6582-1

{
  "heartbeat": {
    "blockNumber": 6581,
    "sessionIndex": 109,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x3649317b0dce5705400b412012a132d90923dc3ed8adec86136866a2c162c0534236734969701e944221373ae7ea6fcc782e5c6dad2fa2a6536c4a7740e3bf83"
}