{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1722125",
    "entityType": "User",
    "nonce": "0xab3f45a07a49c6ad95a3ae51c7a8cb45e20474e2fa3c44d903257e22b417bfb3",
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    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}