Extrinsic 56974-1

{
  "heartbeat": {
    "blockNumber": 56973,
    "sessionIndex": 949,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x82a4d5306930796bd4ace533284c3761ce9984733607efcca56a99b035a6d72c692e52bfebd2172a39cc6c47f6f7c860162855b17f69412fd16c8e68f752f989"
}