{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0x8b76bb6692e2a5cf38b639dbda9297475c7b5a4aa0056d3aaac8d78b3a15968e",
    "signature": "0x724c4b5ce82b418c98350cfd34fde8cdbc9b1b4ad89acc01d9265abc113b65f4237161e1b35438eb644043b6c7bd402cf0f479964911e33fdbd98bf7f9a07c751c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}