{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870591918",
    "entityType": "User",
    "nonce": "0x541e355d6dc8780443101b17c31ffef89acbb7a7875df24753b5ce67c5ea4bfc",
    "signature": "0x765307faa178e85ab451e3dd7f9956caa80c9158675cc654065f8cef83d4da10013883d48e1e8a80963332dde5463edd46f553881b83264580948b34be86d5861b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}