{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54889",
    "entityType": "User",
    "nonce": "0x7cdbef07af1ae16a4e3b099ac692c704c24b32a2a9989a6e904906557c4b6da5",
    "signature": "0x80afd6bb74bdd8c6be72a0286fce7056e78bb862b0812df94aba35eefbecdfcd58b38fbe401446a0e7751bbc0dbd06cafd2d5dc3a780e33b1a38ad97721ee09e1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}