Extrinsic 23922-1

{
  "heartbeat": {
    "blockNumber": 23920,
    "sessionIndex": 398,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x28def0cc717d68c48aab9cf275228b13ba3c435a63c48b3bf2becabc47268e117cddaf0819f5aaee142671548ba6d7d0d8acd2de6c5380c137012b89ac202c8e"
}