{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfb8df8c3012a423f819595552a31f0584b15cdff40df25a63a5640e6f9e78566",
    "signature": "0x5bfb7e1ff60ee933ab82ee95e88f1ea0ea796d6f7219692badf00bdccd30a6c7005e1387fe567ffe50dbf7d550f2bf9388f25a725d47568c93f728dfdedf3fff1c",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}