{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "334539",
    "entityType": "User",
    "nonce": "0xfc3be7b0a394a9254b1240376825e2e20e599ab7f9e60a171c65f1583bd230a5",
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    "signer": "0xD4186490eA39e450cAe5e557A0739c6dD45Fd9Ff",
    "userId": "561643473"
  }
}