{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77901",
    "entityType": "User",
    "nonce": "0x28b31f0707e054c5d6abed3aa1a7a95d8679209c554f028a3a9c614d6f4802ee",
    "signature": "0x396534201530ca9ce493b66267d33ecd54f3c79edb7e9ceb337bb8ed8d8c5e7457632e33e8c6baf08752663b7a9cae5f14cacf50148d01dc5f946db75c13c3cd1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}