{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "72714",
    "entityType": "User",
    "nonce": "0x3dde12034eb25c355af89825afcd01515619138b3f0ced462a0a7cf495d147da",
    "signature": "0x1917e17b15c8d23cd8208d8648f3176cd31297055a8fc0cb7c3cd36d7f3bc1087fb5c6b2cb8c3c1d67d903cff634b7e17fd4bdce2c91e9996d3d35346d90935b1c",
    "signer": "0xa3861Bde44C7a83411C7CdA6C5b5951356E29C39",
    "userId": "821699550"
  }
}