Extrinsic 150761-1

{
  "heartbeat": {
    "blockNumber": 150760,
    "sessionIndex": 2512,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x30413f14f9b56ee81de1aa89f79ac2036a754a16158d6e98b717f3a8294f2a59ec6b4f41d939ff571a003641b3dda5aeddbbb973ba5bab0f23f7904760c8518e"
}