{
  "manageEntity": {
    "action": "Save",
    "entityId": "1333410823",
    "entityType": "Track",
    "nonce": "0xb8a79fda131ba3b54dd29c0033c6bae7e058fbde85d5083968f68499f36a6d05",
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    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}