{
  "manageEntity": {
    "action": "Save",
    "entityId": "1120154",
    "entityType": "Track",
    "nonce": "0x5f3e44601e5ea6d3bbf47e5914cf8faa1e8675b2bb39d89b41f72e274c2db17a",
    "signature": "0x57d77a665e2ccfe6220dfc053f21f16232e9bed3cd5714e320adac8d24e901710398e1961986197a9f2c0803c9f1e91eb30c6bfef5901ffe88f1438332b7fa1e1b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}