{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1353",
    "entityType": "User",
    "nonce": "0xc3c1b02950bdf8d52ba049ce40ef9d4867b70f8983366a2f192145c6dad7548d",
    "signature": "0x21306540cc15ace5cb7432f206e858647a5867edec32390e144e5670d44df4ce7ab38ff26ad0db63bc05cdbe043a8ee7607a89d5ec8dcaeaf63e31d5c1b957641c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}