{
  "manageEntity": {
    "action": "Save",
    "entityId": "1706873919",
    "entityType": "Track",
    "nonce": "0x3d09987ff1c15bd99d06001a299d9bf0ea74502c64a9a81d829bf3cdeb7a1b50",
    "signature": "0xe6718ea8b3ccfdd41db3edd39d51add183441a120b3a99626d07ddd20cd890d578568068eae4343869f245300d9640d98ebdff494f5d2c528ef22a29a8131af51b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}