{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xabb1d17b0503c2c2c058219d75704b739800dfae407f2f2427948ac4e7441884",
    "signature": "0x75996c75498370aa962710868f519731fb0a6ea3ddb66ae5998921fa670037b5241b70db15f591833dbf752f51be1a216ae515c641ee4c7d5ce7b4a46cca95761c",
    "signer": "0x1f5b98CE3855E006fA8e9073C9F0123757D860f9",
    "userId": "433660533"
  }
}