{
  "manageEntity": {
    "action": "Save",
    "entityId": "1701873442",
    "entityType": "Track",
    "nonce": "0x375fefd0456410f3da8cfe9481b171c8604a30bf87790543533752be866ab0eb",
    "signature": "0x37dced64749daac28896671e9637bc9b47c74a849d9f6d6abcc67285d94a702261c71100f916c17341ca2d64e0459347f41c04f5b7c209d7b958dc93a6ef3edc1b",
    "signer": "0xf8B02289D2776b4B0D5Cc87415be8F09D2212Bbb",
    "userId": "804650248"
  }
}