Extrinsic 23620-1

{
  "heartbeat": {
    "blockNumber": 23619,
    "sessionIndex": 393,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x8222a8328a022898500c3080214b3d845abbe522e301de850058fac29515a559a7c91ba0ec73fce3c38325f90f51b50247364f2a11da5db43a0399ad1e06d48c"
}