{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1683",
    "entityType": "User",
    "nonce": "0x74a64b2cbe2048f71b8fc100e2587d76326f6bd42baa45a3f0f1232be402f6e5",
    "signature": "0x7c11d738bef4b47179826cd38e288e4ee0a36f26cb93ddb4e213f5aaaecfe654684d29acc4702e996c7ed5db0f9bc144e211e9f2db26e335bbf0bf2e8afb5a6d1b",
    "signer": "0xc00163EC4A1f48C70D0b676b7F5c071142de6C02",
    "userId": "227991193"
  }
}