{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "201974345",
    "entityType": "Track",
    "nonce": "0xe45b0c3a87e0fa7e8829eec77068b1f8458f38135c79b3814423f449deac062c",
    "signature": "0xdf19e790617ee20d27e31bbdbe1dd84b011c7fc6c532f5bca71eff01757d487d43d7ea077c71121ea24bd0961467f9ee9717f9bd4679ec018dd88e2411ef0fd41c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}