Extrinsic 57308-1

{
  "heartbeat": {
    "blockNumber": 57307,
    "sessionIndex": 955,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xfa203ee546742f62f26a5d2c7a636ea81006fb6f0d9ad6c3e0223760287641648d9366fd88f157934770621feabd2b6b7276f779ee0d6d4b050f3a425b79328b"
}