{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16251128",
    "entityType": "User",
    "nonce": "0x07064ef2ef1ded7c92e6af58d17a92de830ea0c02c2f9c71bb03897acfc6210b",
    "signature": "0xeedc78005bbaa44e88a44e8b4d1372b5b099ff902e849d1f564ee2feca5ccc355e08e0490a19a6cd95a956e373b80daf3df9aaef00e52724da9c9d5950c698b41c",
    "signer": "0x7FceF66E5838Eb302c41919F451Ad36c1E9C50aE",
    "userId": "821595585"
  }
}