{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5091848",
    "entityType": "User",
    "nonce": "0x5db2f37f1d45f085f8b5cce60eb395ca1e5de67a12f62be089f7d0da0e9ffd0d",
    "signature": "0x20efb138ae015858ce32f73c3fcc5bea270d06a6ff8712f5d1b815dc2060f75325b8bdf99c5c1298b939c43a620f99895e28365cc69c22ea674bfa78aa4d1aeb1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}