{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "556395670",
    "entityType": "User",
    "nonce": "0x5c11f743f34d86ea35da18ee812a19e35c563f5de3b9e05bcffb591fbe9f6353",
    "signature": "0x6b9d8b0806fb9aecf60859e72eb5a615319b12d687989cd7cdd9ebf33f27f67a7214f8922ccc5f16349197d39fe6af5a59e48e19687c8b18d5f9ded89d48c2f11c",
    "signer": "0x8f3dD60187D1293D1106436e79dE8018Cd72878B",
    "userId": "712753817"
  }
}