{
  "manageEntity": {
    "action": "Save",
    "entityId": "1075875596",
    "entityType": "Track",
    "nonce": "0x59c75845a8069140894e2df69c03e22e424607c0262cebf07d63a93f7ea1e6c2",
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    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
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}