{
  "manageEntity": {
    "action": "Save",
    "entityId": "73428077",
    "entityType": "Track",
    "nonce": "0xd7bd443c155081a8c20dea29a77284150d77a0d98d554d3df87a80d2817a894e",
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    "signer": "0x98B3f06eAEa080E8d8b1C86F1c9FD36Eb33dEd5D",
    "userId": "615702798"
  }
}