Extrinsic 20055-1

{
  "heartbeat": {
    "blockNumber": 20054,
    "sessionIndex": 334,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xc05094d3e0bf3ee02aca638c467c5d1500ee22fc83d89ad2a2ebd79f0994e558246f84ecfaabed0181e6d313e1b53f0749335531bfad8fb46c6f03c88165e68a"
}