{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x251b024de5c784949c59e7c0c4f4bd1d3497b98175516d659189c776f91cb1de",
    "signature": "0xfa33337f6af589968e578a40eef72b6641967a2fa77e2808b0b9001ec8b6720329686dfd83d27ab26873afc2fbb2f867478efece4cd8e421dd31f7f1561a72931c",
    "signer": "0xE63e65FCe7E937986b2f1003a4098d73367d7ae5",
    "userId": "936460557"
  }
}