{
  "manageEntity": {
    "action": "Save",
    "entityId": "142568",
    "entityType": "Track",
    "nonce": "0x6f6204ce831a1dbb29120fd25e7581d2d09f6c966580e1e83e8fdddf5de9654a",
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    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
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  }
}