{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355814",
    "entityType": "User",
    "nonce": "0x761bca65cd35659320645facc21e6559e4a0f2738b0dd9549613b821278d066f",
    "signature": "0xeaf1b676b47ec01d5cebe3892e93be7b6a20a4666eb643f36a02e53d5c5a8cbc740aef2c633c705dcb3d516dfa6266e569299fa9fc4f365c754eb7ad952f9f0c1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}