{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "277152544",
    "entityType": "Track",
    "nonce": "0xa4f2b669f957b9623d07caeb3b15317dc42d856d1235bb89f5c43c2713593699",
    "signature": "0x4767d6c9a872474ae9d76a215c899e831fb5ae4a0cdf905570e52098365179130f42d2b5f2072875d05bc5528b9b87cbb2f835b5f7bba852ea263950b4a35b0e1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}