{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337384",
    "entityType": "User",
    "nonce": "0x4cfdb5f86cdaa55d59e3893a19ccd7dbe419858921c37289803c80f8cd09c47c",
    "signature": "0x950d07000a16bc2c7d7b8852c58376411e758143a9a0948f5e367dfe420513fb7f2c19be2f24d7b6f21335f66242f87aead3edcdd085b7cbe3061541eb1f18d31b",
    "signer": "0x005385507D169DF7Ad14f23b728248Fe5464Bc26",
    "userId": "303866152"
  }
}