Extrinsic 17268-1

{
  "heartbeat": {
    "blockNumber": 17267,
    "sessionIndex": 287,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x46940c498277abaf4fa5a021e2b31ffd9fa8bab8383b31d623f614dd8b26eb23a1781aca304a0e739a1159e5c7b2150b12cc7f0dc0854abf2689e1d0f46eca8f"
}