{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x4af1414e460446ae5d4f8833cb415634ff9d7f9d6d5ac15446cad142644600d8",
    "signature": "0x3ee4296122e5161cea0cf75219e180e0c7ed79b07aea777f4fdaf733960c982111c52648a944264ccb3a18dd2c8fc886fe578424cdfa00939df10e9b0421084b1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}