{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa8ca93c7fd64064af41cb9396527ceb989b41537461ed9109ecafdcaa187e4a8",
    "signature": "0x38898c6507982cd737a31bf92c2c53b43e3498710ff2a3a868e92997985a2c8216324b397d4e242fbf38ec37bc12d2926b3079f7388156cc1fe55a8f5d6e6e7f1c",
    "signer": "0x59b2AdB5457e737F50672cfd7783475958BA125c",
    "userId": "663695959"
  }
}