{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1447243",
    "entityType": "User",
    "nonce": "0xa253dbf8b68f675a1e9bec061436af829e599b96e80eb5d7683f407412c55d7b",
    "signature": "0x1ca69d8df0bb7f3228dcc1fc703eba7efc6e7e405619da5c6cbced7129be78df02bcacde6a557c4a97eddb0a4bec883f84f8962e97cfee51f7f650145a5acebf1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}