{
  "manageEntity": {
    "action": "Save",
    "entityId": "1170297769",
    "entityType": "Track",
    "nonce": "0x7d8704a00a9291e65c5afb9f1337d6917099cb383bd7a1420ba4919f8b79c570",
    "signature": "0xd96e99ef5e077c8bb55f751060d91eba3ce5cd92de26997572de705993d66e7a0c1078718383a285074b4132baded3f5e6b47d9664c4e05094c98e0a988532641b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}