Extrinsic 28298-1

{
  "heartbeat": {
    "blockNumber": 28296,
    "sessionIndex": 471,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x40efd05a1572aff8be74d3a807556c147ea659ba665ba303fd0bd32574688a3dcc2a70a823420a058557a20f01214696dea04f21d7c57719bb9de647d5602083"
}