{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "258",
    "entityType": "User",
    "nonce": "0x2a6e91ad5b2f6ed9815ceb4e9271a3fcbc885f69fa528d8d1cbf282493ffa851",
    "signature": "0x60444b489993dfbc0a49367d6eee5881331f60d05729e12248bb7541ccf20c2c2e30d41efb18087641f3928e84861dfc67263c29715d8d2f35eae2016f9905911b",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}