{
  "manageEntity": {
    "action": "Save",
    "entityId": "1203018632",
    "entityType": "Track",
    "nonce": "0x98d573f34abf4557ff16ddfef70b56363859f06991dcd2a2fcb06b648c2a215a",
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    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
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}