Extrinsic 13417-2

{
  "heartbeat": {
    "blockNumber": 13416,
    "sessionIndex": 223,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xf8a9f13c5354838700eac5cd916c7c6fb0dc413a3c18c4cb74dfa8484848aa050fd362db91c9542dda6e6af9c3ec25d3f39d9786b3de4cd570a91bb876970281"
}