{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x03bd98ceac76788c43f05b5eba4919b893abbb843b551ff88ad8d1cb77418163",
    "signature": "0x5263c569580bfbe03cc63e97c516722fab1363d3a4a064307dc32b5c6d8d466129e3881005ac1603bbf25111107c320eb18784cc3d78c600b27eec07d3d35c401b",
    "signer": "0x485fD5408a4f519659F5C93A2e49D6af56F2A414",
    "userId": "479510483"
  }
}