{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1298995180",
    "entityType": "Track",
    "nonce": "0xa3fc455d38dc23cfaf819efdbf37c6505f537dbc90c16591e31aed402ffec219",
    "signature": "0x112ab2e1258a8b5af4690f5ae12efce31dc22b08b8dfe5858148831f6cba830e42d2d689c41b515ed0d973c81dcd58c9a605817d0a7137a437dccbcfd7a190a11b",
    "signer": "0xD2F2E85916598FFb221B3d399A164cD39bd24DD7",
    "userId": "132339661"
  }
}