{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x3c917600ae395c8786d5709343d03816f1e7e2c741c505dcd3fe89efc00e6817",
    "signature": "0x0c703d58fa448fe32da5f6d015339422ff16a9f9281e431337537a4964e7736f0a5107736a20c036b2625d40f0f5b7ffca2b044e41e62936927ae054cade64211b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}