{
  "manageEntity": {
    "action": "Save",
    "entityId": "1808346512",
    "entityType": "Track",
    "nonce": "0xafd7a3fedffca7b47ccf177cdd7f267428a539f738a8ad847f3fde6fb014014b",
    "signature": "0x9ce83ceb3df4d6614a282f12af237f976adf11fc852d91ab8438804b507c00d4195791eeafc7c5ee34b1c24c2aaecdbafac8f7d34fdfcc17e31f58a76d8a1d2f1b",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}