{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x937c7d9f79ddd054985c8b49af5132e2e6fdf7f218c4be2c32b6f441a89ca8fc",
    "signature": "0xe1a9bbf21520ef8fd42c3fb8f9a548649ad218eab6e838d980bac3436c6c4fff5fccf804b0e0d2c60392996d7b6d6f083fce177c75c74c63166acb52e89514ab1c",
    "signer": "0xf0FB6Ee8Ad56eA2e147d118ecaa4eB46cf03b448",
    "userId": "831640099"
  }
}