Extrinsic 51748-1

{
  "heartbeat": {
    "blockNumber": 51747,
    "sessionIndex": 862,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x646f7dc026982821ddc60ec13a8c3d824bde986cf19b612748282984d657cb7c058fc388799870982ed01663e609561a64c7cf431b91e15b3da43cc4cf9dfa84"
}