{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x2150f175f34f5c2bfb07d3471990b469a9c355fced75cf9bb80190b527dd12ac",
    "signature": "0x3cee98d2c43842372ae1b436711a1c91b04ade5622248c109c83d2cbc9b4ad76779246b49f1766a1240b64ce77c852fe3c8800d5c713801a6098c50797a8359c1b",
    "signer": "0xc5809dd2451c3AF574bbF8Fe0e64acB424dC5B0e",
    "userId": "267313491"
  }
}