{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "52403052",
    "entityType": "User",
    "nonce": "0x200a654577f146ebf8746ef7b9c7ae27ea2ee5158c1958f2f25d0c99a3847e1b",
    "signature": "0x7d7abc28fb456c6468c1a919b6d61aa87bf499c763350a2a5dbe1b57a88033594ae28175c2497cfa3a835ed3f5694d2952b6e3b739861be1462d2f6c355fb65e1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}