{
  "manageEntity": {
    "action": "Save",
    "entityId": "1836377196",
    "entityType": "Track",
    "nonce": "0xc5e1a027c12a69e30eb0e4be430f7a02cb0b8970f99dffbec6c29a8c482b7f6b",
    "signature": "0x11328a28fe8612bdb025e137f37abd49eccef6c001efd7f50518bc1b779bd7140ed2c9e3889f08f2ca3f66b1f6a20e1236b2223a92cfea263c8ce901a9021dd21c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}