{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355193119",
    "entityType": "User",
    "nonce": "0xccdb87cdcd823867a7f1f66f6d9e507a6fff89ab3655bfa676affe277ad24ae8",
    "signature": "0x8e5fc2f5d9651bbee712441d9152b25ce14eb9bc32b23c5ba65c3c860d5329c95db4347ee0b632adc3348bc1cbe03a2fde63c3665a2c04dbbf980ee1f1784a6f1b",
    "signer": "0x87D061690DA9303B273AD54F96fAf50058d2b73F",
    "userId": "318437"
  }
}