{
  "manageEntity": {
    "action": "Save",
    "entityId": "987484",
    "entityType": "Track",
    "nonce": "0xb7ef36134cbb2cfdeea61e0d0a1c5e08575d0ad2c6f6bd5771b5b07cb6d54c62",
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    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
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}