{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "50533569",
    "entityType": "Track",
    "nonce": "0xc4340927ecd9ff674114481ed4beac82726d03da4ec3b97c3df043f1c51aee97",
    "signature": "0xfe1e791c413d6c3f512e28c6578ee611751d36c3caed44d85883869872d74a9a7f696986c301de5f841ad7af377682c01fa04e318f2d463fdfe6da2d6fe3386a1b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}