{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "525853819",
    "entityType": "User",
    "nonce": "0xd35875de18a8590d7e623a0a1a5ab4c44cff28ecf22ab7f69bd1e6bd5c868573",
    "signature": "0xe77d6862803800395a12a044ae87840fd1960d6fef9866ada1bb4d962c63c6e62fe86fd56abee0983bdde1a691265f799e1938974338aac892102f6b2c73e47e1b",
    "signer": "0xc3e03c21664729d32A8E77189667f4cC5091E233",
    "userId": "498109"
  }
}