{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x45c41702564358207389ddcd4cff0aef3670644229be9bfb075c954b743b7b96",
    "signature": "0x77a70eb7f0700f75c5d47a7d3e7afa1d83f7692bd924784b32cf3703579b46ef566ccd4cb9457d76c246fbd9cf030ce26da29de5f67100b1a52e4d93dee585f71c",
    "signer": "0xc88bd025b5DC52Cde584b07899B6E5C854Af4bC0",
    "userId": "781543844"
  }
}