Extrinsic 62321-2

{
  "heartbeat": {
    "blockNumber": 62320,
    "sessionIndex": 1038,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x2031e3ed441d54c24884e7a664457b70a1e98f913c999251be984e8b37bf964c4dff5ed46bcc488c33530b0cc8c28665feef9bdf16d3913c83d17faf3ffed98f"
}