Extrinsic 174580-1

{
  "heartbeat": {
    "blockNumber": 174578,
    "sessionIndex": 2909,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x0679a5ff385836d837317b2ab324dc3d9b6e58f33ceddcfd314e8a0e55706b0dc86001b4d38c5ab51a841ede1954d09eeaec73f2f52c0a87466a9712cf21858a"
}