{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xb5f1974884e0aaa04f405c8b7a7cb533b13975902dc194aafa99ff2a231842cb",
    "signature": "0x8cc38b8412a84fb8ec6aeaac1f1cfe7fb878e50c6f05948faefd5c2443cd8b46372c3f54a936727cd5b4b45adc80e7fe89ba827b31dd4a7c06bcc57609866b901b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}