Extrinsic 19947-1

{
  "heartbeat": {
    "blockNumber": 19946,
    "sessionIndex": 332,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xd0b2f097756483fafa41b190c324c57d10e383d7ac25af3109461d526fab0c2a450bcb51234c597fd22c8b3f7a2e08c45c3c68920aef5ebf7d33f41dfe4eb088"
}