{
  "manageEntity": {
    "action": "Save",
    "entityId": "133410349",
    "entityType": "Track",
    "nonce": "0x29cddc288879540fd09bf08105fcb2049e3f05227d15f8ea7fcc3b33955cf6ae",
    "signature": "0xbaa4be2f484f0fa3d32f8742258ec370ebad288ff737ca6505934ecb7cda020655a4c00614d312c77b7b3b01dad50ce782dd91d3f91b742a80a33768301292771c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}