{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "993206398",
    "entityType": "User",
    "nonce": "0xcb747dbe8cc76207ddb537cefa26261eb5c9b0ffb41d1e625bfa885f220bcc0a",
    "signature": "0xbfda54c91ee89e683e527a400b225185b0d3197213a6196e100750cb74f5e1cf2a5b474781b66d1dece3b1e6420d31268c5f1befc71ccec68ee75aa03f579cbf1c",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}