{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "722738",
    "entityType": "Track",
    "nonce": "0x78b827307f39d215fb0967c07dd3bcdd1e95e3c59b4011d48638d6ceba7ca361",
    "signature": "0xe8d328ee72b4d07819d6566c8521f611737584279fb205c4c9840c752974825719fe297c2ecedb90398fa71eb43c5c0b527ba766129563f756326775dc5405ed1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}