{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987974477",
    "entityType": "User",
    "nonce": "0x3474aa5966879935579ab1c1babcd7fbaa57ec21b7e2b1e21f922f70a9e9170d",
    "signature": "0x75e678258ed2866c718decca76f3bd23fc13fcaa7d49c693782a1599f72750233e47c82b31fc803b81b0b19ee3a671efe0ea2aa2f4db5195facc20d1d7e4bf911b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}