{
  "manageEntity": {
    "action": "Save",
    "entityId": "1765885039",
    "entityType": "Track",
    "nonce": "0x3280259531d200c7e9bd8c7f64bd904823924e180527db53a734d89c017d5885",
    "signature": "0x8895dc981f7c40f5329032425c9eb25580f3fe4c583eedc14c6436870f99243003137d46bbb27b8becfbdb2cba90d339a86a21ba8d4a8f2758fe017cb46b5b531c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}