{
  "manageEntity": {
    "action": "Save",
    "entityId": "55623",
    "entityType": "Track",
    "nonce": "0x88b59cdcbd5bcbf70b2f2107318a30c1f8b503709099f079e1b26f522e7dcc46",
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    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}