{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54212",
    "entityType": "User",
    "nonce": "0xef20537e1f39d07b6fab24c850661b86be36a6b7d04fa9c3e190a95686c38e1a",
    "signature": "0x672daa7be88bf08e6eb18bd7ec2510c9dbc8b99c40ce7d49d62af3087ff3abfc03fc1d19b8dc08d70275917ca8a20b3fc769ad24672dc59f48ac7f6a3b51ddc31b",
    "signer": "0x32e5e224E0727A7B2CA7FBC47b945D1B1A59abDc",
    "userId": "76829893"
  }
}