Extrinsic 137928-1

{
  "heartbeat": {
    "blockNumber": 137927,
    "sessionIndex": 2298,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xa8ff1da929510badc0289d1fc5430717898649f52e4b5b5e511cd78478f93427ecaef7afb10c03d06ab502ab5c16783741200b9f572c769f3b27c75555b94d83"
}