Extrinsic 31581-1

{
  "heartbeat": {
    "blockNumber": 31580,
    "sessionIndex": 526,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xd6a722ad1bea5b28021f52d4a6983cfa79ae45dd8d95d9e232c62258f0ac6307b4e53296021d226dec61890441b4cbb1b3dd92a10644ee41b03bf5d2e286cf8d"
}