{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390365",
    "entityType": "User",
    "nonce": "0x78794cc338044824f59a4bb42b1626d1507c74e855ef01f9cb97f053f6b099b7",
    "signature": "0x450cfb49ff8b7e56a1327dded24fea9fb2003267f61cad30fb14ff18ead133003212dc8934b4dcdee984dcf15a51840101f72f3ac4404086a16f1850accc7f861b",
    "signer": "0xbcc1c37Dfd19ee2B8ed143ebE449e5c756163B4B",
    "userId": "758001977"
  }
}