Extrinsic 16486-1

{
  "heartbeat": {
    "blockNumber": 16485,
    "sessionIndex": 274,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xc4ef06e47b6ef836a21a1530ca42499634fc8760716bb5dc50fa48c466066a36a040c3649f2a88b2849711f267a5d0bb4c761158b66a0eccfd1fb855a87a098a"
}