{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x87b36f436ed45a754ad174913e0dbd7625591751afe4bed7d6c3ef79cdc38895",
    "signature": "0x3db9608365e72b77913dcf8bd376c6a05c9b11380f1ec45c5e78f5c6cf4709341f96c548627d195768da1d9615d6224722461aa165e9b11838b9a76aa57de8111b",
    "signer": "0xAfE04b3A47505816aD72A3036422AC553C1dFEc3",
    "userId": "515307498"
  }
}