{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18937",
    "entityType": "User",
    "nonce": "0xdefc74d2d52856b22217013e325cdb46882f4254136f55e4d5d1488b676793ed",
    "signature": "0x4f80d4497f09a591bafa941652f7e09fa7707407798cefd364c30193be5d428033d33aaa00dc97822cfc23ae3cd4faa8ec9d4bf91c89cf972d336471526d79b01c",
    "signer": "0xC965eCf215DC75172bD11e8E1dbE76EDd838886e",
    "userId": "260849"
  }
}