Extrinsic 11491-1

{
  "heartbeat": {
    "blockNumber": 11489,
    "sessionIndex": 191,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x7076953235ecfe4a71848ed41d6de8fcfc60264569e1131343077f56daf4d7461262080d6b26d9dbca13a3b09755c943495fac993cf42458b6973616d742478e"
}