{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe3947f5c3f8195a5433d0bb384c4618f915426460df0a0786dbaf822823f078e",
    "signature": "0x9b38e1315edc5a3b19f52c7344ea9ddbd04bf9eafa928df7c6a9ded06b246acf62fcac59d210c5055fc66b625ff37c391068165399918e93314eadb7355d22061b",
    "signer": "0xE1A69B02D810E90778616D10b2b233aF3479D8D3",
    "userId": "299206130"
  }
}