{
"manageEntity": {
"action": "Save",
"entityId": "128648172",
"entityType": "Track",
"nonce": "0x568222e4f32663ff366219166ebdad9b813535f7bf37edb20548cb54f7047c4b",
"signature": "0xc998ed7eed615982f397bd343b35f5468da0c8407872c17ce4f90709f81623c22d9a5a54c9ad742fd52174f000996cb18b7016328040e8be2cd837433e7914eb1b",
"signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
"userId": "728570067"
}
}