{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3752",
    "entityType": "User",
    "nonce": "0xac88c9cd00fd425f6fb76c8831c2c3a63f27f2fa706521c520a5022716851f89",
    "signature": "0x9c4bbeae2b620d74684a6ec9ae9ab5de75fd8b30e97dcd128edbee41fdba269e4cbcce3c83b1af6b2aa426d7f66daad22a842ea5a6b8d54111c3a5c5e0cacaa71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}