{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "954705651",
    "entityType": "User",
    "nonce": "0x1d72dfb0dedb20ef76b1b51126424effc60a5da9f592c64bcda95b297848468d",
    "signature": "0x7370e313f4899162c97d18b2dcee230034364df92c1d7fabfb0728037ddedd270f45f6ff03ed32aea6b16386a810b1388f145be43cfcde6b35ed1bd8a1eca4771c",
    "signer": "0x1EeF7f4505C388ca4a4B9A8fC01FcFa7c805D3c5",
    "userId": "17766667"
  }
}