{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16564",
    "entityType": "User",
    "nonce": "0xf3f9d92669c08c58b74515a78f6f25f4f2c05469fd8f17c8cc699a536bc451ac",
    "signature": "0xd421843055b00addac34bda362fb15c85e956013ba023c8b7510d630c008432436101368fdd559a396361a95e5719888bfcb6e383bfec0e74f879599ca53ba4d1b",
    "signer": "0x88Fa434b6779399544798F17756E8e1c253f89F6",
    "userId": "898433730"
  }
}