{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "270304224",
    "entityType": "User",
    "nonce": "0x710a4834597d38f4460e1c5776b8dbbc4d488d63a219d590cb393eda6adc638b",
    "signature": "0xa78a35c276d604a05e275f17ee719d0dde0a0ed17acdaffeae95bd453e36b57b5fad55bfadcd529350d60a228853818d95e54760c6366f2ac9216515faf263501c",
    "signer": "0x595E8B6455B35290E0DD33D22fa066A22F1d53CA",
    "userId": "988212601"
  }
}