{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "495613098",
    "entityType": "Track",
    "nonce": "0x6b85521e2cbff5de0aaf638f1bc1793861c3774026d0094abb921913feccbf8e",
    "signature": "0x8ee9c93e05a87ecbce7163e3012b9f45c8bf9ce03220dc86c1ff285d7f8fa7bc4e031e9e898e4c12151611988ba4cd7ca175ebcd8232efa108712e3c130cdcb81c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}