{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9b04d7d09cd90165eb3f0e8c51cb21af59a6cced889a42c056b8fbfa258a4a15",
    "signature": "0x58004cdb4600028024066a5d71b9973be04853ce7fe7e20d07eeadca3fae7b7058dbd2df1b5185540b035a58f5fec3a5336272d2238f308a548535acf523f37e1b",
    "signer": "0x647b023D9D541aEB501b247164618EC93AB65EcD",
    "userId": "770031865"
  }
}