Extrinsic 72948-1

{
  "heartbeat": {
    "blockNumber": 72947,
    "sessionIndex": 1215,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xbc808a0cad5b6cfa1957a8f93b281015edb0148761dba47a6995e321fa921b015145a2f1086ff9738689c464da2c0ee0c10e8e3fa6b6167f3076de1fafd36283"
}