Extrinsic 137974-1

{
  "heartbeat": {
    "blockNumber": 137973,
    "sessionIndex": 2299,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x92313b51a4ef2a9307568e7d2d5bafd07f6bfe8134615915b9460a9fe3366c3174d5c92696029e515969553e54f03f35b10054e8127cbe4f36c5e3f63d144582"
}