Extrinsic 37487-1

{
  "heartbeat": {
    "blockNumber": 37486,
    "sessionIndex": 624,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x620b43077729b8f7d053b29c56ab00a3d1b3e11e914c85d7e69b0b68426fee37814613447611618a78980f30d026635e83faf738079bf6ce24aabc60db1fcb89"
}