Extrinsic 74134-1

{
  "heartbeat": {
    "blockNumber": 74133,
    "sessionIndex": 1235,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x2e81c9c1faea65fe946e7386737ac42c006df2d11a1227d209b5bba59c49066d5d6b81c869832d185e220564f7d5408cb98f611f6608fb6d76642a6c826d478c"
}