{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2b2f91a1bef4de5e609c847b1670caf7b83db4c7dfd71cc1ba45f3b40782535e",
    "signature": "0x8b5b4423d9f3672066b8456b7bb270d14ad2d71d34dd82533e09423bd7d3c3ff43c752552cfee10307d456b30d4217a0105d2eea1ed55f84c5088b3493d72c4d1b",
    "signer": "0xcC37fc45282182aFe751c3a765f808633C4cAAD3",
    "userId": "810291807"
  }
}