{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "328108",
    "entityType": "User",
    "nonce": "0x4d2e350f878108b32f81466e309bb2ef2dcc9489bddbb75d45d26a4329abe65a",
    "signature": "0x191247d57ba614117a416722f6e7be0c4de8aede61d8b134ab1c6837c4dc288f0e5892ffec1aa698c75acb6964213d2fc7a623bc104e8bddfaf8f7116ddf2ebb1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}