{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x7026e00c7880e43959fcac781f5dbc7185b4f26ff1a61f93c321243addeec16e",
    "signature": "0x0cc46c52568edebefa83780344085fa55aee54a0e04767dc77795afc0af3fc5f33dbddd6536a95ce6ae5f2e517ede86d8a3e98d7aef4bb8d60ec4b9febe6485c1b",
    "signer": "0x3cEe8ddC12dB405b52FC2a34764302D78C6E9d3D",
    "userId": "328828428"
  }
}