{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "412109420",
    "entityType": "User",
    "nonce": "0xe01890369778ed77c5294092d5ca5f8e712c0b2943c1d1eaa76a833f18a6fe48",
    "signature": "0x8df1312a974d2a76de89b18de0d03e5ee2666899041073d53504d4e0c0c2aad37ae46a0d6dd97c9024c343bc3303c83d3a3c47579ca5b8d4f995b91691c7a7fa1b",
    "signer": "0x1ABf6DD41fe1E6b1C2d3A69859a25C92caa31b32",
    "userId": "17689"
  }
}