{
  "manageEntity": {
    "action": "Save",
    "entityId": "363482705",
    "entityType": "Track",
    "nonce": "1792027548337960407",
    "signature": "0xde96274f5ed0f2d446000aa2619cbe71c5342d56a1c1f6341cef5b2ddc90dd0f4ed9937e0c22329b148cd09172b1cc4565519fd947a63cfbcf3da8c8d373ec751b",
    "signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
    "userId": "670307808"
  }
}