{
  "manageEntity": {
    "action": "Delete",
    "entityId": "666144",
    "entityType": "Track",
    "nonce": "0x4b10e9a6299484a80118461ad72145c0e3fbeb296b829c48f39e7b8afc449136",
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    "signer": "0x25Dfb5B0D7CDE92b65C3EEB690F0d4afdd575ae8",
    "userId": "253005"
  }
}