{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xefffa7b66f7c12a07fba76e6fb86eedff2b77fa65770ba5e2437f99776ad570b",
    "signature": "0xbbea5ffdd9cb9d48543bd88f3bf053c64e79fe077efdc20db47610f4a9ab3a4d3e8f9844d1b1bd17db259a346155261ecac78b49da5448fa1841f157523a29041b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}