{
  "manageEntity": {
    "action": "Save",
    "entityId": "1910810418",
    "entityType": "Track",
    "nonce": "0x7c4250ede6f41953b29c3130c63294cb50a2fb55cf28cc1ea1d6125a5be0e794",
    "signature": "0xa76a44d469ff754fc1b39776b7bba493aa297882b845a40d7bec118cd502b9d4184eda5a5d55c142ae2e8ebaebfac383b0a8cdc55e6f87acb09484e78100cfdb1b",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}