{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "604013128",
    "entityType": "User",
    "nonce": "0xcc0506aaa59c87f24891bb7dc881a03e9da520a288a1353e9523343129f74e45",
    "signature": "0x95125dff18c2140fe3b00e3ba309df092471cf9a6f0baa29a3b04b01f7015ef62f192af0b109f4fb62cb6953277c97c96d17d0d8053f1020c50f9cf0fdd5b1251b",
    "signer": "0x34330f217164e11A470D3a23E97B9B18eAD9Fd6c",
    "userId": "765383018"
  }
}