{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "548664",
    "entityType": "User",
    "nonce": "0x0586534afe56773f872b4d00230d89f84a4f22ae4137934adfdfb79adf2db49b",
    "signature": "0xec6330aa486e13dccfccff0324516dd5d5d66bf34bba55fd5a8c4c36fd4c757d515ccb5e37be6c2704e0613fbac3f72d587fb8adf569ebc29297c172957792901b",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}