{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xd3318c55f80dda5065a68eae2fa6d9b493cd32a6b9498d343f9069d4207d8f2a",
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    "signer": "0xC0f8D2C092ae50e1512d827eBeb817e1ea4112E0",
    "userId": "451729998"
  }
}