{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x28fb98d920c869f09ef39ccdc3f5dd266ba597196384b479b4977911a8ba6aaf",
    "signature": "0xfe20c773518c22dd02627f932234e0e5c2dceef47cecea47bf585e7d00349cd73bad0b8af00d5dbeea6efb907da2578becf0c257558ec1596ecc4809ebb35a801c",
    "signer": "0xAA23121a7f0A35e37A00c90737535F3743a08AE8",
    "userId": "739515407"
  }
}