{
  "manageEntity": {
    "action": "Save",
    "entityId": "2009433913",
    "entityType": "Track",
    "nonce": "0xb9afb93a6660821781d9ac0d4cd7e49cacf267643006286b4ec24c9064d836a7",
    "signature": "0x26f5b226f471e79300f20e01a06bbcc2a1ac40284bc4dff0f0a4d605d629c28d02c0acf6c62cf591b0877d08b1ee7a705fb150bda1d80f4e242947bd0cbb831a1c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}