{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x07fd0db3e3d7d0b622ac109852ef130f83fd529055fcca576e946fd7d8ab2599",
    "signature": "0x0113c8383f835990cb37636ae2cb79bc52a3ca9a1aeffdf6cce2b29a107f8f8c5798909424287e41a9bd6acbeea73e75226f3bea20d2ac9149db3e5abe5581721c",
    "signer": "0xAb988e2C48a71289c0c9a58a2Ce3b69B8531d518",
    "userId": "532463224"
  }
}