{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0x19d35fadd44c81b1ad3a2505286a54a8fed86106c9c0a5046623e78baac85647",
    "signature": "0xf63aaa5814fa0c7ef8da2c9a70026e8f75d5d1b1765ddd2d006ed1c0550d4ba66136214311f60c77d19d4aa32e836ccd12efd3f099d05efe2c8ff583e5766ea71c",
    "signer": "0xD06A00B950F1f08B348e3cEf0B75Da0010adF313",
    "userId": "238712"
  }
}