{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108203",
    "entityType": "User",
    "nonce": "0x78c06e9b7e3f1edaeb915c391f3e88dac13fb679b6433fd3be11f61fb8cb52b8",
    "signature": "0x09d83f9e435169dce9861d776c54872ea5f66cb64b3d7f3f4179b7fdfad504a521ce003455bd36d57ae5ebbb2603363e5b1ccc45a11b0cab92da482a204506a31c",
    "signer": "0x7fdeEB144300AC6b1Be0E83d8f006b2D3140F73D",
    "userId": "325377357"
  }
}