{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1288887269",
    "entityType": "Track",
    "nonce": "0xdc0c6b56f916d64e40a5efb3c97bbe545fab4e3bce0a6173e370cc815c3c752c",
    "signature": "0xed7912f19b8d609ce5d5a86500b6fef770cf1cd10da83900ee761d443c657a1e72da17447dc83e0e2a981c3791d404b8803c1285520a8f65e9e9848c256a5f6d1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}