{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "266899367",
    "entityType": "Track",
    "nonce": "0x3e590e21f0440361c530116645e9f25f8f045cc55ee52c39b0089508a290d493",
    "signature": "0x86a5bd066118860518ba94974e586e91e8376d236b7681f6213bf80e843b585167d2bd0a008189c3a524eea33d782aa0e407d428db8d2b31e76d9090aabb528a1b",
    "signer": "0xb1Ffd68A7E33f03445daf78201aED429bff324D8",
    "userId": "593005307"
  }
}