{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "423859",
    "entityType": "User",
    "nonce": "0x7d9391096cf462484b0bf1b54540f0fbd4f9b451ee7054d79b9efdba5cec63df",
    "signature": "0xb2a4b218723fcf1402bf2f7d9347306f2aa5305f044bd3ed66735cd9bf52d88014a9e3ccf9a01bf864996f0596d99c5d8e800dd18c69471b77db2034e33cdf3d1b",
    "signer": "0xf7cb5Bb69a63cFcc4E9FEAB1eD8Ba25fcD527B3e",
    "userId": "976458054"
  }
}