{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "534",
    "entityType": "User",
    "nonce": "0x8c93fd55fdd7f98c3902e4739adac13476c7f31aad8f7fa2da527fec1a63da34",
    "signature": "0xc4f7d47aa507d6340c943db20dbd370dd5d051fbebb49e71c6839d3a6cdc71a7642914beb2fca70356fdda34170198568ccf9231844f31c242ee683ca30290791b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}