{
  "manageEntity": {
    "action": "Save",
    "entityId": "1277084242",
    "entityType": "Track",
    "nonce": "0xb8a14321959ed7f46c85a09248b835fc5dff133c48f441d0bab79055d3c65082",
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    "signer": "0xDD3Cb841c7f19ec5581F8E2b14d6f7a58B92d0F7",
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  }
}