{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "597397433",
    "entityType": "User",
    "nonce": "0xd65d6cdeb4d12b8f7b3ffd412531b68ed071c61a15b34842e1ba278639f8daf4",
    "signature": "0x83c6bc77784bece49571c55c9ca3699562a5aaf702a03cc2cde86567fde6f1e91aaa328fea37022f7e02d6a5729ec7f3906754089f118ec603218c80fc44238c1c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}