{
  "manageEntity": {
    "action": "Save",
    "entityId": "2115212273",
    "entityType": "Track",
    "nonce": "0x3f168115826b92bb19730796bcdb6a36531410375370c4a7879ca31288e3f4c7",
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    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
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}