{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0d5b30c538e5ed81cc3809750094caa1d575dcf8de13817835bcc0a1abe7dde5",
    "signature": "0xf6a3b8b75c07188ef7fe86a7f7701b36e536f7bb39602bb21097f1a20c416751019e6e8c3f428aac5895a550386aae3b54602635a217068d7a943bf0080e8dfd1b",
    "signer": "0x14FF2Ce3bf23AEeC9C140996251F6f85D8e99431",
    "userId": "53273933"
  }
}