{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "693365797",
    "entityType": "User",
    "nonce": "0x3bf768ba9f29e9e75f468874d4ac9ad5fc9391ba565c47142dbfca547c09da79",
    "signature": "0xfebade70bc26fd71d064cc7ab7adbd7303c90b8fe8f5fc4ef09e57a32c0876e67167cca0a9baefd15ad76df7b333c5c9184c0c4f64b138e3e39831a57ab018fa1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}