{
  "manageEntity": {
    "action": "Save",
    "entityId": "1924857858",
    "entityType": "Track",
    "nonce": "0xb020819e7097d3a22fc8e103e9fe8fd4c6e2e734c32a5b3e3822b918bf034d6f",
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    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
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}