{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb058f6e698ed079d7fe5c58c88bf2749301f6ad477f4faf3d9128ab0a6c5a980",
    "signature": "0x5bd6a5e229fa876ec82c677ea5718ed19c82ae4155f0adbe2a80e5298fd3f54647bb94c089260daff88ce2303007e8f5481f0c1f4f77f59b95d53e3ea00dda581b",
    "signer": "0xEa00e68b50421b929a412069DC327013810387F7",
    "userId": "212568545"
  }
}