{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "234183",
    "entityType": "User",
    "nonce": "0xa35fbc3d2ff469143e64db84ec22f4b990a5dd90219ba9a0f9cfa11eaeb3e0ef",
    "signature": "0xcf94738330405edac58673319f7aba56541e4425c087db3a0a8e4d9716e5fa05504398fdb4ac6e7cbdfa04e113d38b86f32e6e3b9c4b87a75175919efe140cb11c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}