{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "723085841",
    "entityType": "User",
    "nonce": "0xb43e622f1dba5d6337108e2c477463a6748c3f4fb6ae6502979caae229165eaa",
    "signature": "0x3eb34759f6eb0f5f137ddefc83a76b67ef3c3ee8dbdd615a064b8f5d8489fb985ad2df3a787caf6b516d4fb42e1173ee238d79d0cdb7e1e06ef918520dc1fc391b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}