{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8223",
    "entityType": "User",
    "nonce": "0x21f8d2ff967789abff4886ba8897f66b028012c25879e690c8ea20f266766b27",
    "signature": "0x28a429cba3243a9e240abb095ea3eaf2c89d1ad01acb6074b0c47e74ec1d62da7a70cc8c685ffc0766670494f006fffb1687102dd7fcbd61ec8af9fa2114d16f1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}