{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xef5efbfd12133195e7d566603d325a120bf67febaa253df16f39203dd8a7e5d1",
    "signature": "0x9dcded6a596a62fdc4d853a9b505c8e99c3b29a1af8d38bd81ca32ebe951ce2e51605db59a7afbb3ec213bed1dfaa06b6e0cd6190536495794bb50eed5d8ad661c",
    "signer": "0x149CC6a9cAa0251Ca543017dBB916C90B016ed03",
    "userId": "820810989"
  }
}