{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "718015741",
    "entityType": "User",
    "nonce": "0x575e2c18ce00511d217247f714292ea321a95c6fa695f451236c13d340a48c08",
    "signature": "0xa74bf5202094b5f34f2b13d09c2c7ffc16cd1c03f706ff585998774e0ae0742b3e21115aa15adb2f5adac9e0d042e27785e81dc5e3ab5bf97dd67d935f9fcabf1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}