{
  "manageEntity": {
    "action": "Save",
    "entityId": "1182385694",
    "entityType": "Track",
    "nonce": "0xedfcf3a7c583c09d2147c18a5ad0ec929c7eda28be7fadc7d01c2c6476b39eea",
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    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
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}