{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140302",
    "entityType": "User",
    "nonce": "0xa674da83ed05518dc8e7d6a6a09fb86e95cf6c5f9b4a75b73d01fb8887e3c395",
    "signature": "0xfa8959062f161f1813e9740112a728e56883315cadae693711616a61192029a91c75b417c0d1176fd10673550592629f592abd080b508d598db855288f99939d1c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}