{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x9477d8ff04ac9197162ab28e1c687215296a15bd3d14cfa0364b6be4d8bcca1c",
    "signature": "0x631eb98005bf866bf25a4e9c98b9aead5a43621f56866b50fc34453f1bb068184702fa4e2c77d1c142e7e9bedca484663c4e30abc67c08a079a4f7b29bcccdb21c",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}