{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x414a8a651bc948e86686b6ef9ac083f29f67762f8fdd829d8f6050231fb6b4dc",
    "signature": "0x251462a674a3ce637f55273f25e9f47c075ed441a8131fa649c3ccabc28f68926c682ddd3e584ec15a27b5488894bf117a3d6e16e5e8cdf9d6407cc0652ac5111b",
    "signer": "0xd12A323399559A3773F865c8F21031bc39c29135",
    "userId": "219968466"
  }
}