{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51425",
    "entityType": "User",
    "nonce": "0x8c750407c646484d6c649e0590930ab81c96dfcd819f7b6782be0b2507b9dcc3",
    "signature": "0xd4d0d299e2071b0afcfd8efeb0319ba91b968ed95de0e0b23ca42517d0e250735798534c9639e33c10345447815c55bf17b8f50fc2ecb292f66c0c04d8da14fb1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}