{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "563283580",
    "entityType": "Track",
    "nonce": "0x2712d6e32c5e70415d9d8234be197acab3b7bed7c38d323b83ae70f7b617b10b",
    "signature": "0xb2bf81713cac9472476326fd1220c0dba4aa271f0e4c983328ec7343ac91efaa366049f3225358d76425f6f683c024f6ecbe5b264ab505464da6b83e5851eb4f1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}