Extrinsic 44866-1

{
  "heartbeat": {
    "blockNumber": 44864,
    "sessionIndex": 747,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x882024f9d1737a83680a33c22c17ac879a93c56b49d4f90471679e778302282f303002e78af0630742116e1cdfb7e7d6303f6d3805e7dcc4ce3022fed4bb0783"
}