{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "940916831",
    "entityType": "User",
    "nonce": "0x07ab2c0a5c961895385f4272f4395dd90ba212ce324b46e37c58ff30569657dc",
    "signature": "0x805588bbe7f4c3c762d1260cc7cb8a6bbe333b20f3a2c4158d19cffd2b89c2e029dc08cfc03954b457234945a744852aac2b144c7072b29d44af53c88ef280ad1b",
    "signer": "0xa4D802EC8b4c87B8920f68215f2F8A060D003485",
    "userId": "657635486"
  }
}