{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x008eb16c19067b6fb3d353553b9b46165318c328aa9fecfa8e5e82f2830e230d",
    "signature": "0x8510004a320356c25225e44a36f273623fcda242f3dbd00ab29ea07e0aaf25c2089f409335ba21bd6691371d2bc5411dad7b91637b0f0104acf45c1982a23daa1c",
    "signer": "0x308C4394325Db1bbD7C01DA7FAAD5071BC4246c8",
    "userId": "310343902"
  }
}