{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaa1b77e6c5123f52f83e354f5b74cecc80de35e0b993fdd3a3d7305574f3fe6f",
    "signature": "0xb767de8835d1c46a583cdd6a41f188c35034a488b008f1d38b8f6e61c88d9e4333e8b3161dada8e01a56d4bef308c3d46aa4dc71f241ebb02cabad2203e90ab11b",
    "signer": "0x5236996ea02E55Fcf42b835184ae2199d5183dBa",
    "userId": "66705606"
  }
}