{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "164689605",
    "entityType": "Track",
    "nonce": "0x409420a2975c6fa85a63231aa3309c1447d802e8fc2f8e07d30e1a8bd20d070f",
    "signature": "0xb401d7adfe9eb69255e3e6d6e79c19e4f386acbe6115ab2b1bd103fc99eb1b7a48108d389894379185a6b3412ce534fca19fa419dc2d6ee294ed7503a767f6a01c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}