Extrinsic 19365-2

{
  "heartbeat": {
    "blockNumber": 19363,
    "sessionIndex": 322,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x2cb1b89bd551e05a10ff276e4594f77f2c90abdd5936d97aeab42f012fa082577c973cf9dd0eb9916cb7a8c89979c929f1c3954fd44198807a9951f2a3d1fd87"
}