Extrinsic 20626-1

{
  "heartbeat": {
    "blockNumber": 20624,
    "sessionIndex": 343,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x04c31e9d9e5cc8f7009c64cca2a4f557471a9c53f8a12b3d99ad07a4cbcd8b6f0291eda1aa4ec174001c7145c0d30709299b8592e52954e9a44d97158c23da84"
}