Extrinsic 16955-1

{
  "heartbeat": {
    "blockNumber": 16953,
    "sessionIndex": 282,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xa69b8ac22f080090f97bb32cef3d9ab1e3d4a191845637927adea550224ed5318cb6e663a7fc7076db3db9229e68bd5695d9529d641bba26835e20414dd02384"
}