{
  "manageEntity": {
    "action": "Save",
    "entityId": "1073754",
    "entityType": "Track",
    "nonce": "0xdffa3bce635a80caa29cf528cd0fd2d7312e62d093c8b1a759f3147832ba8c3e",
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    "signer": "0x97EC3C617a694b06E5b703206e8a911eA15c595d",
    "userId": "590549095"
  }
}