{
"manageEntity": {
"action": "Save",
"entityId": "992804706",
"entityType": "Track",
"nonce": "1792379803234364468",
"signature": "0x0f23f28b9fe1c4dee79c41cc3fb58bca8e63b021a509c85933d9b9f535c93b0342d72ecc1802446d3cda4bb943264c749ddd93e52eb342acd6c311090e79f1c01c",
"signer": "0x1007e09532BE90331E035838A9E2E0700bB9741a",
"userId": "329513359"
}
}