Extrinsic 37447-1

{
  "heartbeat": {
    "blockNumber": 37446,
    "sessionIndex": 624,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xe05216b90c3eb086b86fe578625a9082b43ff30c7f97a1e6a6634a06349d774210f81ea32839e79aafd3f33c082a81240ee2fa7861a6e6524ee958726518118b"
}