{
  "manageEntity": {
    "action": "Save",
    "entityId": "368113661",
    "entityType": "Track",
    "nonce": "0xba611c4167592798c1740778088e6e69abf4706838ef6620a439a3428b336129",
    "signature": "0xd18b5fa951694cdc10601eaafef6e0f3daf1e80c9ffa957294cf982ccea51ff15cfbb74ae0916abd2546b64e178a17566a8e374064d53aaab561ceace7c026071b",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}