{
  "manageEntity": {
    "action": "Save",
    "entityId": "1120041647",
    "entityType": "Track",
    "nonce": "0x29f26272a918ced75bd575b916283481727f75688c31a4a0b0b2c43c74d774bb",
    "signature": "0xfbb9a2f1c79653987437a76c41742b4ae88894f4a4666113c3f1d53d97f54b1f5017801b7716bbd9cf31450c4cc947917e52618c78a5f2d8f375a5e09250e5291c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}