{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54988",
    "entityType": "User",
    "nonce": "0x0cc4ab76d4a8097b4962ef9ebb51b347955674c0a850c91d22e688d1d15af4f1",
    "signature": "0xb225a54c63afa44e727fa51b937c161c2c35ab25fee140d1df35b5b5ac3f82222286a59ebe8487761d11fd27a4fc3385c16999b7f82faa74dfabfecff8071d6e1b",
    "signer": "0xA386423c4cD40942cbb64b9b605C317a465BD1EE",
    "userId": "356385717"
  }
}