Extrinsic 19609-1

{
  "heartbeat": {
    "blockNumber": 19607,
    "sessionIndex": 326,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x6c4dc0da7c6e375e8a9a906cb6ba912ffadecbcc3ae263faa9e037757174eb4d52011592af4397cfd5d0cb516eab59fd279593208db44d57876fe2c70501fd82"
}