{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15141",
    "entityType": "User",
    "nonce": "0x58795ec6cb3ce09795c19cacacb43dda9ad3ba79d06bd4d10bffb7d5a034cc24",
    "signature": "0x16aa8448e30bd5cd434d60a9f2e1533154b63f90b6eef5d1656c72a319d33681397f0207169e66e403f9e2700e67c596ad79f18cea38c6185e636ea641dd9d631c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}