Extrinsic 19536-1

{
  "heartbeat": {
    "blockNumber": 19534,
    "sessionIndex": 325,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xbe56ec706ecd0c0b1844a5e516f7f10b839dac54fdbf515a265ea1fd361dcd39994a3467074a2e0a3ed4f4bc5f95ed4947a9185cdd2553f7f5e0e254b347548d"
}