{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "364389",
    "entityType": "User",
    "nonce": "0xadd18117904bb02915b50e8f78a17a3f1eb4289ddab6f8cfa69c27ed40eb80b1",
    "signature": "0xbad91c4902ba62cf87a9e282ffd5e4f6faa576b5518a066702c50f691cebc04746fd7da8a24b67ec42a6f945176a2bdc124d8c2ebd5fbde4d6547604fa7708071c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}