{
  "manageEntity": {
    "action": "Save",
    "entityId": "406108",
    "entityType": "Track",
    "nonce": "0xdea0710c20b26adb21f2cda62e707023beeb4b144b4abcada702f02396168f1a",
    "signature": "0xf90a0a2383c38959f90a3d900e98080b4eac193bad8783a1fb095299714633f3790f0177f38e454b865008513f2299efc08e6c9066231b778d9b5303109214021b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}