Extrinsic 3582-2

{
  "heartbeat": {
    "blockNumber": 3581,
    "sessionIndex": 59,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x2e424e2d9e4c485455b6976d5b1e0164001f8ce186828dfb8523d1ab02ee06320d692ae473d3d882ad1bf433ffd9d55013dfe591753482b0384514f205992f86"
}