{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1905824",
    "entityType": "User",
    "nonce": "0x5f8c0173d3f4e2d449ef2d30828f023f5985d1ed9b764dd4fb1e493bccb202fe",
    "signature": "0xefa50f507b90d5cbec835a28e84ac56344b7d41e5530fce1ce7fa92805a7ccd850d4f55fd1ecba76f60f69df750b7bcb5f56dc227a4e9506b8b938e419396f641c",
    "signer": "0x975699e892A0a2f2f16d2b8950Ac7C882B8EF555",
    "userId": "544952248"
  }
}