{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "195573",
    "entityType": "User",
    "nonce": "0x1547bf389239ed0f383738d1d42145b22d22626f4de5c0a6561a214ae0eb0cb5",
    "signature": "0x4254550201a5eb54c899fe0adb73fc967b726d298888d22d4fb82d09de3e131d02d2c93debd37ff3da07ba6ac6ce2b2bb1f3987d6d03f74d9d06f8321c33aa5e1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}