{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "470700",
    "entityType": "Track",
    "nonce": "0xc6ebe735f3ebcd32213ce02be52f73942707f2cbb2c96647937dfb9cda55f6af",
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    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}