Extrinsic 143551-1

{
  "heartbeat": {
    "blockNumber": 143549,
    "sessionIndex": 2392,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x9c1991e2a7b1eb94cf053b2433da0771dd26c84ba7a9a50ee977559d31889f2ce4ad6d0f3a7d54ba2d60972e21ce00f4a962f69237aeac869f85e05a4b82058c"
}