{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1305537573",
    "entityType": "Track",
    "nonce": "0x5ede59f2f822c3d3b3f77ad135d9be8958142387b70b8102afd575b09c1d082d",
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    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}