{
  "manageEntity": {
    "action": "Save",
    "entityId": "1689537966",
    "entityType": "Track",
    "nonce": "0x543f868110079922cfd9a9a0f19d8b4594269e15d4e859146aac61954a17e1f1",
    "signature": "0xab9fa67f8f2cd400d6cff2b54e59abab34c4b1f5b55c9c0ffd7c71415c1c447f57462c43df2055cfb56bd3ee24777a6ba47153648421ec9c8d0cda1ee967bb4b1b",
    "signer": "0x05D4434893815F914255C028DF9Da0a3e11FE0E8",
    "userId": "181835656"
  }
}