{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "999692142",
    "entityType": "User",
    "nonce": "0x63fcecfde830ca0d23a25f561c1bec99545257886dd20584c5cc36b3ba4e95f0",
    "signature": "0x0b7ff6eefcf733cceaacdc554baa842035327dd83c9b54e1ec834b97debb3dfc22c8985768568c5f56f8266d5d5555ae2fefc5564a001c36f54f3766598710d01b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}