{
  "manageEntity": {
    "action": "Save",
    "entityId": "1239006901",
    "entityType": "Track",
    "nonce": "0x70faeaf745627ad37b515c049697f66ecbdc5a5e4aa49ee9f1d7851e96c27cc0",
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    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}