{
  "manageEntity": {
    "action": "Save",
    "entityId": "295565371",
    "entityType": "Track",
    "nonce": "0x9bc13881bdf746c52d6c68b827c05cbd540113d3347f14186d175b484bd88c33",
    "signature": "0x4610dc49802b2468aa9f264d4837975e77af026ac4d02ab3581fb1acedb0314e37798a505065508be1587bab2c7f3c1dc151e4ce76661285f26ca97e8b56f63e1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}