{
  "manageEntity": {
    "action": "Save",
    "entityId": "2124163954",
    "entityType": "Track",
    "nonce": "0xe8b4af278d1e82c867cdd32080e534341501085a9a863d21f18429dc0f773daa",
    "signature": "0x14d49082c6ee8ed43e304af0d98bb9107c031abb6b24a9955f448e3694adb8af47b469b58b1cd5ab1ee68e5d3200323c6c041da58a0e94c3bb93d406a526ce831b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}