{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "889450527",
    "entityType": "User",
    "nonce": "0x3268a565c6bbef1a8e89b04b93c1e164766b5d53b57d12983f1d90a74f870990",
    "signature": "0x5ae2c5284712acc03ef726ffe277ba37a31fb863ffd0f9151d70a66c8070c0c850371aa20d8bf4a4bfe68becdfca6731afb67dd498db49ca08c89d7821d3e7e41b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}