{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "594323899",
    "entityType": "Track",
    "nonce": "0xd4bb9e49b50e845f2c2b84f0ec254ecf92dd43cb4087e0d831d6a24b5f3c9740",
    "signature": "0xe9ad70c1a27e1419080741337b2ab9b032393c62fa3990970746a8a3d183224112b9f9229993965d9a99a9d1896b14e5f15deb5f56a53a0142ae89ded0796e161b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}