{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe3ac71d49b66adcc9d04ad2ba57939da6ca8249934f485a8893127c09f710696",
    "signature": "0xacbf707016f4d8b1dd21b978974a3bb21478cf85a92a690e2700d58cb810fcc147a797947487a214641236a4f25b290041b3a0ec519f262bd48b50b7b1a1c32a1b",
    "signer": "0xaab26F59Fc55058d200BC69aDF7cEDC164dDAEDb",
    "userId": "514089768"
  }
}