Extrinsic 150451-1

{
  "heartbeat": {
    "blockNumber": 150450,
    "sessionIndex": 2507,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x2405ba1160e3c22ec9d2bad8d0ca2481619acabd59be1bae3c55179281d6db4557e324d9bac586e1c7bd9053233ff01b45146a06a5820acd4d24b646124d1889"
}