Extrinsic 397302-1

{
  "heartbeat": {
    "blockNumber": 397301,
    "sessionIndex": 6621,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x54d1028974b52cb3a946b93f3737ba4d5e935a5b9a996348234fbaa20448251fa3afa1206e2bbd0ec454e040c33e5cff233b6e23399bdc8c34ab61bfa9a73b8f"
}