{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329599",
    "entityType": "User",
    "nonce": "0x6dbfcbfc95750a655bcb4718e58f9f5ae4a47b8fc68f929ef66ad7781c4dbecc",
    "signature": "0xb1ea331842bd5f013833cf24e5e4cb988400562f4cb2ef722c42b3bfcc20013d399bcf420724e01fa86e4641b72a40a06ffe992d5d31f79aceafd459e82207251c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}