{
"manageEntity": {
"action": "Unsave",
"entityId": "783303878",
"entityType": "Track",
"nonce": "0x440e890c4d5e7dd2e437ff28526595382fed364dbbd51d572c4196a3e47e061b",
"signature": "0x90fc6901863ade94e615a3a1041b08f9e0ab02dc69b688bbc815f310b086549a30bb18bc1525f52ecc9237f2a25bd848ea2240c2f59d3e327caab24826e6522e1b",
"signer": "0xcF1BC458908F84936B19Ca8Cf67C751CD647B02b",
"userId": "310796"
}
}