Extrinsic 28959-1

{
  "heartbeat": {
    "blockNumber": 28958,
    "sessionIndex": 482,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x9075f7759462b81faed43d0217b1dc4203b5b4d7a7744f5f3f0d14640bd54841df1bdba0bb66df386774c7bc50cee92d56c840062fefae038fa7178562e05a8e"
}