{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "572130424",
    "entityType": "Track",
    "nonce": "0x4d37a74e51f69e6687355e625420003f2e12c6bf208a4cb5f362cef75b532d4a",
    "signature": "0xac78bcfbf01c715c20035083f679a487a793091779fa0dd431ab81d3dcfcad9f46a26b5d49ecb3e78514c3f20b6de059e33d3e6f84ac4b8b981141df2fee70701c",
    "signer": "0x6c9ded46fAFEC2fB7cC4737D2626A927cC59aa2F",
    "userId": "75469"
  }
}