{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "201205798",
    "entityType": "User",
    "nonce": "0x1930372af7d5f1a59c288f2a1245329d1c23ac35644a014f129e58d358045de5",
    "signature": "0x56eab9cf850c35de27c473abd7aa17a285b0ab0d9f84aabe2bbdcde09d461a9c04bf0319a79d77d9d825d680b4e17a327fd975bc5111b9bace513d00a5d6b5a31c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}