Extrinsic 28963-1

{
  "heartbeat": {
    "blockNumber": 28961,
    "sessionIndex": 482,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xf00719029adf03be97a9da5b6d51b554081bb994e53605a6072015634029347e4174897c66b12a63e0f2a36bc5291088bb532e489f5bd6073b3de0d713b3a881"
}