Extrinsic 34405-2

{
  "heartbeat": {
    "blockNumber": 34403,
    "sessionIndex": 573,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x72a28da640237400b6e2965a457fe58326e55ba2f2c3aa912cf3ec440d2911629df8e38f2a66a7f299f4e35c10a1e6348d2d3e71502264a456e1f74ef8476483"
}