{
  "manageEntity": {
    "action": "Save",
    "entityId": "73922888",
    "entityType": "Track",
    "nonce": "0x518623ce67df635d0ddbdcb861ff4a4ccdcdea525cffb41b3fb0c05e011ff306",
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    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
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  }
}