{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf3fa9b9055aef86c728dc82d1ad8a105f8bb767f1d63947dafd7600689224287",
    "signature": "0xfcab5e214272c0c496a8d22d86d79da9efc24a4e6927bc64539f8e176a4b46d1308662b2f89e93785758330149191969348ce545c018c26c7991383cd0287c8d1b",
    "signer": "0x17333E0420185CAabaD87E492a49dd5D2864Da9b",
    "userId": "843454053"
  }
}