{
  "manageEntity": {
    "action": "Save",
    "entityId": "88025",
    "entityType": "Track",
    "nonce": "0x00510cbd32ad8c9d82a162080b76e4b7e0e20ba5728a1916e86fa83e025b9f90",
    "signature": "0x4d6db37f8052e8d1baae32b513d5fa359f4a75cedb1b64b78db8046bffdd158959e890be0e7c9923a0776ca9f3dda8f3fefe33df5b6ab72a8508158ebae296b81b",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}