{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44577",
    "entityType": "User",
    "nonce": "0x73f100bc230c3c46e4ef2e23928704b8b96a0768ef79f03e7d73a126a6555b81",
    "signature": "0x29d5263be975531eb55c2f862c4ad38933137abfb2061498b725733d83cc27794965b341816a10cd38ff43030f4ea9ffa0f229ad51ff250df04ee947cf8a6f371b",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}