{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "328894",
    "entityType": "User",
    "nonce": "0x6a56def3285be78b73541c45a6e8f6563eec51779b3fb3bc2f8411524ec76875",
    "signature": "0x841c5cdd77006c26e289e5f48572e87b46b5894ba394b99031322bb6727d64c856dcf8a044c73ce3b2bc252b127161f44e365f3529e315fac170af82933750a01c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}