Extrinsic 53497-1

{
  "heartbeat": {
    "blockNumber": 53496,
    "sessionIndex": 891,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xc25737d2b5294525c98ffcb690b362f3bc3569d7dacc3dd729052c2a1bf25c05b46b3ec7ed565f965403944c899fac2ba0e1c37999d1e80cca5bcf9e65a85980"
}