{
  "manageEntity": {
    "action": "Save",
    "entityId": "941636992",
    "entityType": "Track",
    "nonce": "0x5189ff4a64856dcf9e390cf64badcc36ba88c2bb5d3770715a2366c2469e0a56",
    "signature": "0x7d9aa029bc1ee6555f72c7d1c2bbfc8a3ea6c51f890b0287e797d5a1e49947e30e522662f984578f5d85fd808b31170619160011f1a1df13bd59e821eaeb81641b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}