{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "593684426",
    "entityType": "User",
    "nonce": "0x867f546693541bc53cc8d60fc8bef59814bb59901aa73e00e6ad62e56dfb2d74",
    "signature": "0x4d85b52727a9ab01167e83381372648601b009d0e182a292caca2270d80b2ca95b2170894f9562a062f0815a5790d668dd42c1565b8ccc2123d2d5e9f78749561b",
    "signer": "0x0D2c1331F52a98aF1Bd206E3C28062E717CA9E51",
    "userId": "597927803"
  }
}