{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x49aa9559374b848580cc08ef19d1b70793dc0dcc106eb72ae5908723a36f2e1a",
    "signature": "0x346ff040ba9686a554d0f97bc7529c902bec0f17c846ba09defaade7d5a8ff9a000442c459f33ec74e13ae8bfa9dde684ebad0cb0dbe52cf19b330fe0d23b3481b",
    "signer": "0x2698E940D3F9BaeFa5071d298781907557CB6641",
    "userId": "463940409"
  }
}