{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309080",
    "entityType": "User",
    "nonce": "0x83b9759a7b9647b14ce5ae7233e40ae2df37693d16662ae9fbd33bb52573ebd5",
    "signature": "0x898e611e157ae3c2f6bec88fc3e4fe6a233a5079b43208568992eda77ef8d6f6107ecaee751bd505d56a93fffcea7e9b0a279ff4ea69ad99d84585489ac525cb1b",
    "signer": "0xc4A500E17D812B285447720CCcb7F8eB148c91bd",
    "userId": "256479919"
  }
}