{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1f8a6cf51831da5684e0f2a98c9f2009fdb0895c36d617f4ca87d9685c411d1e",
    "signature": "0xc764340e750b034c7d3e02a79896757f8468afa91017e1541dff3fe619867eb4297579748e5733afc98022012cd966adc830fff26e50380b0fc8cba45715d8a31b",
    "signer": "0x585E1741D553166698Cd60709950BC8c9B0a97BE",
    "userId": "984791554"
  }
}