Extrinsic 16482-1

{
  "heartbeat": {
    "blockNumber": 16481,
    "sessionIndex": 274,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xea9a1acb983d834f4d6a20ae6aa9802a870e859bf34fbf017d4e5e575418f32b07b55ffa2bdcf31af50de59deaaea094549022d312431db519e9159777ac3d8a"
}