{
  "manageEntity": {
    "action": "Save",
    "entityId": "1470053102",
    "entityType": "Track",
    "nonce": "0x5a9d11979e764b01c372a9fe9065b8bb588eb0548c51015c56462d5706e1ef8d",
    "signature": "0xe92e4d7bdb7783943c469093533d54f4ebdf789e05c92f8bd3b41704693a679f3b244f824c9ef36e05fe45701c741b79664c7473c4a73fafafb0a2baf06d18e61c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}