Extrinsic 53740-1

{
  "heartbeat": {
    "blockNumber": 53739,
    "sessionIndex": 895,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x9e81d6c1f2bc47383c6cae5d79d67ed174999efb23b0be12a8f822ae431a5748b1ebdd64e4a16bb23faf0b92474e120c7e622a336ae1b11c52eeb67a614e0f87"
}