{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "818521868",
    "entityType": "User",
    "nonce": "0xd8618a5f79b29e3dd8f6c187258e25edfe43ffcb32fb31c5268b28a68546a58d",
    "signature": "0x36466df0584a77b93e89fb2f301b2628f93f620b7e9f7e4626772ce03bf581e852a8a985cebe488f94a17a24850e258f4159b4ff9bd9c10c143892043381d96f1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}