{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5642",
    "entityType": "User",
    "nonce": "0x742532a1f44cd0ae17f3b2e1313bc483522b2fc14274d29d7f8b47ebf160a4fa",
    "signature": "0xcc2474cc18d35f1a9978ba1d9213c6ea75106b53095d89df1cb0dd36754adec74028b544e04388f199985c223ef6ff42f94288c9d618bb30e5ca5871536aad641c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}