{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44142994",
    "entityType": "User",
    "nonce": "0x53e80989d55687ea234d775d698ac83ec994260111eec0d5e7f2e3d08e1e826f",
    "signature": "0x496717eb1d734a309272bbd4f6805d37ddc606bcc19beca43aef4799933fd1600fdbd87e046b6a3f89283b30b62e7691cace10d06fca65f77b49ff5badfc6ab21b",
    "signer": "0x5D00322270e245E33ccB70127b557dc2631900Fc",
    "userId": "503107386"
  }
}