{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "9000",
    "entityType": "User",
    "nonce": "0xfe44b2f32d71e85350778db5861df8115fcac903775be8c08fcc256c134166e6",
    "signature": "0x3b50edaf09de79d554189603ba14bc9386392b79e1a4cab10fbe3d6dbd9ccfd0058f96a6061227fcddf188aa23c4579a38c6ac2bb71112b3fb85695755c51d551b",
    "signer": "0xd41d03fabc8A113A5e32266E5645Bff54f429099",
    "userId": "154510400"
  }
}