Extrinsic 28942-1

{
  "heartbeat": {
    "blockNumber": 28941,
    "sessionIndex": 482,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xc4511a5ef99dfa96539b72582ae1915ebc4a42479f6ce4de9f9a94e28c7525101b02f6ed5cf14900bc1ea47ffe4ba8414a0bfb08278be6398d5f82e1d2971584"
}