Extrinsic 75579-1

{
  "heartbeat": {
    "blockNumber": 75577,
    "sessionIndex": 1259,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xac4d670f282039d143e5eaacc146044221563166f6fbc8928b246342ce380a51444e40256c6d10fe92657ee21d931fbc5a80164e43b976865d54263abd537a87"
}