{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "576672259",
    "entityType": "User",
    "nonce": "0x2076e73ffb9cbdbe669a587515a2dc0d9098c8afb871a0445764468ee37dc69e",
    "signature": "0xb08cd5c961d819462c737896257e876726a5b315778055a6d23ff5ba17e8aa493adb7def1e259695fdaa68fa02c90123c41cbb87d7d5ba46ede3aefa573d6aa71c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}