{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "676581728",
    "entityType": "User",
    "nonce": "0x9879ff638aad91e3f262763057391c042ceccb9f218d4cb7063668b574622ed7",
    "signature": "0x9242918a72411760823f6cfe832d7f4d6cb1949669482e125b2b11eb152c005072ba886e53f74d97ca5a49bc5a37a5251923795a408c0da315b384e7103904d91b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}