{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x4a2a92bd3e5a30da66f7f80cae9ad97d2a6802c7ecf2009a607f7621fca30a3c",
    "signature": "0xaaf45383fbde4123c7d5708e2e91946c340be3fb18f2baf445029f8bb51d5d2926b3d20b09c9e19292efe2bec1df0e32df46a9c92c170eccef5a7fb6021cde661b",
    "signer": "0x26363DA4669439783EfEfa3176EE2Fb895445d78",
    "userId": "824146899"
  }
}