{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304857543",
    "entityType": "User",
    "nonce": "0xd32c6c7c79bb6e792773c2b813273f2292c52c0975540d5396079881cd841836",
    "signature": "0x9fba8572d7cd1134e5f18fc8dfd783baba5a40da9201973501c2aac41591b7ea6299e5defbc88ab482158b6f73d88ccc966ac3c1cd3a24da2dac2808f1f160c61b",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}