Extrinsic 3562-1

{
  "heartbeat": {
    "blockNumber": 3561,
    "sessionIndex": 59,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x3acca6a34a8129bb0f673b1f5f4afa629fa319a5aaf6daff2a88c86de78ca22313391e2be5b42a070d205422d18f6484ab02c73c63de77ff92437c39cf908080"
}