{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348103",
    "entityType": "User",
    "nonce": "0x331bca683b1879068d751ccd98ca96115fbf49a0bd073b4359f976f8b2ab74d2",
    "signature": "0xe7de260220a9209f8a01ef9924e4165dda68e345ab2b6f3ef1d373f35e27cd8b25bb73580c845a8f682a4204b9a038a895c4e0222f9f9bc5b37872c9d43bd2021c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}