{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf199cecd9ae61321c45b8f7c77a90cbc5d026b5388a3fe89e73cb926c13ab492",
    "signature": "0x31cae5afaae0aa93ba67c415f49234fe0b388340b7ed099ea100afdadd536df64f0df8483070a9f7bf30bc5834b0ab2d623f55cd929b8f62360750804cfc0a141c",
    "signer": "0xb1CE2f67A42674069F4Dfb34073e3d9DAF462C84",
    "userId": "977976542"
  }
}