Extrinsic 57279-1

{
  "heartbeat": {
    "blockNumber": 57278,
    "sessionIndex": 954,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xdeba5ea646df3bf08616fca30819b856e4b0531bdd4eda73655d21029eed3b1f77cf19c5c6445d8b8ad8023fa5239b3415947566fac9f5f4f6e4ea51493f5d8a"
}