{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304921883",
    "entityType": "User",
    "nonce": "0x7e8296d807f8d0fc47fcf0f0e8c5a4fdbf0074688e7011ee9781e5678c229124",
    "signature": "0x46e92f4f861ee499c1ed4b79ca5ec17fcaa8e828492199afce4b97c5dbd59761344be213ab5f6fe0128a32dd516025b28913483759776cc4cd5ed57e83fcee531c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}