Extrinsic 13303-1

{
  "heartbeat": {
    "blockNumber": 13301,
    "sessionIndex": 221,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x9635a42d1ec018fdd4d74d6e5f666ce716db264fd11d6764dde9825846c0e612bb52450712d28f8b45418865ac5eb1a4a78dc1cb7283fcb0b16a352a35e42786"
}