{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345244",
    "entityType": "User",
    "nonce": "0x8cbf95fb6c4b6d3679d8350ff81349a59382cf11cf84758594646fa97a64406f",
    "signature": "0xe34a7a5a176cc5208e8fe4dc1e3acc003e773d3547dda537861b6abe809121c569f49794a57fa10ac77e5696fd92b639002f391006f762c3770a9a5cdcc11c711b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}