Extrinsic 17441-1

{
  "heartbeat": {
    "blockNumber": 17439,
    "sessionIndex": 290,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xe200db1c1683e14d76613cc2149514d8b2ca809bb25b46cefeb3bc961481dc21712881f220af478719e85f4f3b3cdcd6d67da338e96f59413c3ab6bce9e6248b"
}