{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x149ee149444538050ac6383cb81ba9cf406a553d2c407c5e6b9ec747d10afe1f",
    "signature": "0x6ea56cf60946c918d1ab09153ff3bf5aca4736148be4de782b5ad046d7c0825326b569eb16976c5e6d557496b7f0a34ee5a4dbe97ee574dc5140c36066665f231b",
    "signer": "0xda92033B4efd81B21Ed967957729E80606f35a44",
    "userId": "320998610"
  }
}