{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943839579",
    "entityType": "User",
    "nonce": "0xd10ce90338fe679978e783b2541e439bef8c9a92ea109ce3c9e50a6db0fc589a",
    "signature": "0x8b1b542689d1312bda1976e05103a59029d3820edb1e3f77798641b947ac5cfc328b8db4a45ac631f697fa6d03212af59f46eaf6b7eb296fa1e35297f41bbe691b",
    "signer": "0x1ABf6DD41fe1E6b1C2d3A69859a25C92caa31b32",
    "userId": "17689"
  }
}