{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "463996490",
    "entityType": "Track",
    "nonce": "0x06eb3c4baff4e136f602f0b50977e338ca251fb68382a1e308906121d0809c9e",
    "signature": "0xfe598e6d6157d80f07ae79cdf1758f162dd847ae1134f4ff29d3509c5abe8bb15702a9d3e21fd74225bed6626cd0c632a38538835276e4fa182cc4ccaf94ce151b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}