{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbd965c55fcb21009fce47e016f063988534b9c91768279644b76c74c311722a4",
    "signature": "0x1d5704056bd1dd84250fff910806e4405c958cef922daf2161d785bffad04ce1441f72e490e185bfb17584479d35b1b26b41f853c23fc7a7439e7f49d5a5d2321b",
    "signer": "0xA43473b76c403EDCeA8AF401394F766b725Ab463",
    "userId": "229582519"
  }
}