Extrinsic 28661-1

{
  "heartbeat": {
    "blockNumber": 28660,
    "sessionIndex": 477,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xeea53100e11cc5180b8b8faebbc49497f183e6523c98cab40cf2e8491ef7825907f883bbf8f91fc350d033722fcacbd1f9d2faab2a34c8f2954cfa8369d7bc8c"
}