{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "485987672",
    "entityType": "User",
    "nonce": "0x71e452f955ce9d2f1a791667401a47ce3e7bad8c86e6d0b5c4b7c00cdc2b2f2c",
    "signature": "0xf3c392c9f844d027716e3d5b6f092b7d611e7ab48d11b2ac21ec561840b1b2020c45c5963b5f9ec39759281ed753bef26837067ab63d8c7363f55c45c5b2e7a61c",
    "signer": "0x75Da3C6dD4bBBbe11CB9AcF70B6cab12e8208989",
    "userId": "432267938"
  }
}