{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0x52d6dbaef5e9cee55863f63ea6f0bcb7524269d9b913278d0631fda10719a228",
    "signature": "0x78cc1352d797f10a5df0d083e6f5e3caf28534319d65439dcf0d4ca7db16c01a313fdb6e94ff3c9697559a609ed23b80af79988c4b7638675400c76573c246e71c",
    "signer": "0x4391C746E11181B87164C3C6DcB2EA773D749ECD",
    "userId": "729432364"
  }
}