Extrinsic 45194-1

{
  "heartbeat": {
    "blockNumber": 45192,
    "sessionIndex": 753,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xbe9fc6cfd585c701584a357611d016fd97fc3a5ca2300a2f9f79b1ad17b0ca3617953872a9d986bfb75745e0b2300851a4f5036b76087afd0f6ab5d8d0d5cd86"
}