{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "954236626",
    "entityType": "User",
    "nonce": "0xd8b750d8efd9d48b51aac6c31f809638362fd7a842f702e5ae17d89b212d5a09",
    "signature": "0x91d17d1495b39d6944cfffc98bd5b2a4bde2464c1bf25d5b0d9e9b57997a8d4f31d9651da6726ba9eea315c9527e0738015dc4853468e50afea70d2b4d28d6111c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}