{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390699",
    "entityType": "User",
    "nonce": "0x761171ff54141abe8ac868c89a17660c4b24401d1ca531e312a1a06cc1ed8abe",
    "signature": "0xe5d09e215906aacdde5a19244ed1066628962cbcb349a49310e43e3a76a2ac7e335a46f02c8078568d85b8ccc0d4887f252e3fd46ddfbae1d5c2ae0780d5b2f31b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}