{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x462da266615fb836b62ce6a6539d2eb930602f4c00a02d53838655811275a352",
    "signature": "0x713b9e05d92e52bff1a077c5b09de2f9e7d969ab29fa259b215d878d126c31011cb93445c2b64baea195988048f9eb44e2ff552501ef9a1a905db084db0c6d5e1b",
    "signer": "0xfDDc1Cc4CFC91b88b14E9682daE7011b2a3F328e",
    "userId": "433579009"
  }
}