{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "393873",
    "entityType": "User",
    "nonce": "0xf017bba54b26b833948d4b78035351322916a9037d6f7d819adc6506075edfe0",
    "signature": "0xdcbfa9e5256e8b0b020087ff4ca5c5241bd2ddcd4980d8ed1766f85ae0007ee0152596ad23c00c047c7d63bce52d4d8604c4395005f0cbfd3285d7cab912bd031b",
    "signer": "0x9Cf4d5aFdb327Bb9fb209F7Ae9Eb7E3BC6fA85F8",
    "userId": "723085841"
  }
}