{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "800815210",
    "entityType": "Track",
    "nonce": "0x616cdbfdecdf80dee9735237401c835d96826be105620e18cf5a3a8ba427a260",
    "signature": "0x0f985ca596aa1f59cdf8a2c14368649c1914891b2a38e80675031b5f8fb87dc54c6bc4af3a25626466854c9c32599aafd250b0624dface61e2f766f4eae53dc61b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}