{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "129358",
    "entityType": "User",
    "nonce": "0x5903b5c904aa591dda04849e890aa44d526ca4faf7aab96858d091d0811b98ac",
    "signature": "0x1e90018828607e57ac748d114a50c79d1210265148aa3e009f5a05234dc40cf06090f0f1f6d6155431a28f8b6cdf5a00b9a48fca55a3dcd09112e9d03399bbac1c",
    "signer": "0x5f002eD639b9263aAEdEE0aB936DE9F51c764878",
    "userId": "131017"
  }
}