Extrinsic 5978-1

{
  "heartbeat": {
    "blockNumber": 5976,
    "sessionIndex": 99,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x42dbed91a4232fdb728bd927a49b7f296128bae8e9054379e6b828a73e337748dad6ca90d926a1b97a2c3f508121c5c68d40edaa7f0593d6d33783c99579958c"
}