{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1685453",
    "entityType": "User",
    "nonce": "0xa47ed270a98abd4e7d2d6aa7860f97d1e4c9253517c6fb6e90fec512d43f5355",
    "signature": "0x76e4f64cbe28153e7d807d24d5a7e9c6b6bf6f31b4e49870f1928c5ec0d6406d1f3dd24c9aab70650ab6d97a9132593bcf038bf6ed6ee3d1aa22a559aa073d621c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}