{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb933045864042eccb046b23b2935973c463db67d3fdabf15364565ee77a6c3ce",
    "signature": "0x9d5b3f2098d60b887dc208f6208766709ecfc74e3d894c946d56f2787b43c8bb16dc69a700c2c479922f95f0212fed4ac454e77428bfd380b17b4fedc72d35741b",
    "signer": "0x49e936dc8f764055F1A37Ca3e07C03F640E49079",
    "userId": "616832616"
  }
}