{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcde40623c4c8e0f778bb14f4244b18b97631587d8fdf6d1374c53d8315d5eb4b",
    "signature": "0xd8d09721731a85ce19cbeb7da852674d66f4c54ca386e0e6927e00cd5c27b18f40874118a54ec36c2d75d1281b4930cbbb60c57a29ab2b015a99561f8a30168b1c",
    "signer": "0x9dB5c1fFf1f2a10a2915896538F46804c2A9b8D2",
    "userId": "512641808"
  }
}