Extrinsic 6627-1

{
  "heartbeat": {
    "blockNumber": 6625,
    "sessionIndex": 110,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x68152cdb8636dca76f4f7c5981778d477045f6038fff0f27c8b625d5b691431a50fcef0f8b513bd45c00e533358ab9f767c7a253ee261b7e7257b7ed66664584"
}