{
  "manageEntity": {
    "action": "Save",
    "entityId": "533369143",
    "entityType": "Track",
    "nonce": "0x3749fb60f97c6247eb285021f519ea209c3d62a6786c40e5dc09e584d804a8e6",
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    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
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}