Extrinsic 157604-1

{
  "heartbeat": {
    "blockNumber": 157603,
    "sessionIndex": 2626,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x04865c226bdbe70e2293f82a295d1e6c5827088cfd6d7a24d46a79288785d713b5ca96ddaea5e2792d5edb57676bfe58f3f09cbd38ad083b6ddd0e85c7a87e80"
}