{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "673328",
    "entityType": "User",
    "nonce": "0xc944e80cb1b52144d09285bf591eb59eac66673740f48f2ff4cc3256c35ff11d",
    "signature": "0xd2f077c9deffdd9b75379f568dcdba50da632ad2fb16986b4b958ed4fc8fea2741a459da64a9c02cd3079178f4f0a9d29c1f4e71bc0e868d100ddac5552ddefd1c",
    "signer": "0x33c702d534707f8Cada5DdD521C5900827973f1D",
    "userId": "5642"
  }
}