{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51656",
    "entityType": "User",
    "nonce": "0xd15db6a8aef26db4a6da18f3b74eade5ed0ca8f8e55c7aba884300f4c1cc9b05",
    "signature": "0xa88653160490b21bf143d5d187ddf2ea73d6a4b3bfab28884b6367107619f435596f9152e27805886bc97ba3c6864093e90b5acab98274d467346c45e65ca2d11c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}