{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x30019748f16037261944e1dd4e5225b00e9734c4b54dadcc9785e9af7c8da5a7",
    "signature": "0x58a4a15e00c2f601dad7c815ba8365804a0ae76c9d1053d99781afe224274fd77d5f9964c5d39d5d223146309aff7482843a5ad9ddb9360adfaa420f25ddaa171c",
    "signer": "0x325bE63b5dF13a4b07D43f94Fc4D97c7A4Bd229A",
    "userId": "771300663"
  }
}