{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "515476773",
    "entityType": "User",
    "nonce": "0x956813a1a2ed785a377058ef696b4d2cbc04264d91801c3226c07813791cef64",
    "signature": "0x4f977971a40875a4bb8cd8755f21abb3aedb088b16010148a49ff5554ac8b1b24be4dd170650a9edde69d6a381a21a6b1c9f31020a4919e78cedc2b16adbbdcc1c",
    "signer": "0xa1F606584fdE30bB7d4BE2EbeC98A5F95E4559f4",
    "userId": "786922215"
  }
}