{
  "manageEntity": {
    "action": "Save",
    "entityId": "692303751",
    "entityType": "Track",
    "nonce": "0x45c567063ce50a3c57d4eddd7d29bcb90d344f2d873eb0b20e8608a220a89d6e",
    "signature": "0x5b4b8b52099589168ed2f2e1d44ebfc52b2bd01846ccddbb1696045b9b693d227aeeb95b5bb8eaa35939b6a0561752fca72f96a8474a4b6e87abe11005b4d69b1c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}