{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd3548867e20d8aaf7bbab83279a92f80a06f9eeca7f447a8b3193d3ed9b0d37c",
    "signature": "0x599ff9e3b8fea452d381cb6d3eb5cfdf1bcb494a6cd6617098e3c72a2f36057a14735c3211429c2b310f258a4c6427828e38a8b012a2538999925c31f0ad18e41c",
    "signer": "0x298d66cc9dF0A59502B3633c20E42d4a0f50F0eB",
    "userId": "871693062"
  }
}