Extrinsic 393621-1

{
  "heartbeat": {
    "blockNumber": 393620,
    "sessionIndex": 6560,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x52f2ad05735ef76a1059093f13e161ec7a400e917e0c692f7e3cef7d0c9e3818b65de93cafb5349780c43c02f6dd1eb74cc57522ba75352282ed5c7305dc5481"
}