{
"manageEntity": {
"action": "Save",
"entityId": "1636367574",
"entityType": "Track",
"nonce": "1787805557125826581",
"signature": "0xac1d592b9833b2a7c8636887210f10068aacbdaf4f4541527ea6e8a5dd1c3b941c5ea7164583e7aa2444212a4d5ae32e3ef0b1443facdec63f138fb48824cbc51c",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}