{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16231",
    "entityType": "User",
    "nonce": "0x0f0dc28f3032d6afbd4eaac28d2e97ec593a577b0c7a69f677c0af450fb01d05",
    "signature": "0x62a720fa23fd5991e4d84479f5b1afc68b5e24c724ed35e71a8dc3bda44152c501c64c68c4bb348bc32b2f8ea7b22c0c80422c03a09daedf8d9dd68293ae3c1a1c",
    "signer": "0xA5594f75935B53086a8f3231b314C131605FEDA6",
    "userId": "140185425"
  }
}