{
  "manageEntity": {
    "action": "Save",
    "entityId": "1295626834",
    "entityType": "Track",
    "nonce": "0xf4eaed7996c228bb73403e56d022e40c970e03144c8e8b36a08e9bac48be6aba",
    "signature": "0x676170f9fdb0d370197b45780ba98ade57ae9ac262f8aaa1b7c81b9f0f72aab23a9d7d16f74fe14a2124ed9df6c9a030682f75ed2bf7b0ad953cf686ba4bd3051c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}