Extrinsic 20443-1

{
  "heartbeat": {
    "blockNumber": 20442,
    "sessionIndex": 340,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x2a5c6db7ade2dfff62377f5c84c1f8f7e70d75f008df847e331ad9d21f5aba22953c7553459f5cfdf09b4924ae3226dc40d4e49023d22ef805b142a7532c6889"
}