Extrinsic 53138-1

{
  "heartbeat": {
    "blockNumber": 53137,
    "sessionIndex": 885,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x6055a192564382496988f24dbf2ea22d5f0803098fc297be2729968f1978d343bf36af5f28dab2bcaa6800d0651d5a825cf008a2adbe500a0abde3864bc8df84"
}