Extrinsic 37998-1

{
  "heartbeat": {
    "blockNumber": 37997,
    "sessionIndex": 633,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x34bf508cefa0765c4483517224a930760b80785eb8b10e4d96d232e11cd3757d08244365afedd717fbb27bacc8e77964a87f1cd6ca4a5efa617bf3f89ac5e58b"
}