Extrinsic 37248-1

{
  "heartbeat": {
    "blockNumber": 37247,
    "sessionIndex": 620,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x904b4eefa4e542cb2672317f20864483692edd1aa46887909462f2e3e02b475608c2033b94cada5d85a133f5474b283e7b8ba686a00562ad52649643dbec0086"
}