{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1012423148",
    "entityType": "Track",
    "nonce": "0x4ebeff551cf1f63ddd507c9a40324d6c8ee08cd83197eccb77c179bd34a80539",
    "signature": "0x469d723bb9b3523ec9a4066e6376ee8cd9e7579d2602be622efcb167ac812ff9673feade807d323b97540869c4cd4169a4858cbcbd7d85300c61fa4bc54048801b",
    "signer": "0x82deAF6e4faaC1d9648c49F3a71Fd6c8d45ebBa3",
    "userId": "136071001"
  }
}