{
  "manageEntity": {
    "action": "Save",
    "entityId": "1678440466",
    "entityType": "Track",
    "nonce": "0x91407109340ef431aece8174524373ef1479b0e9c5d09c8e0ff56c18a52f32b7",
    "signature": "0x0d793157f341fe372afc682c539f8d5e206ab30ae4b123bfb32f2744588bddb51eb2a74d97c3d1959e2de1842f623ce411c2a1faedf74b6359318ae24e0870ac1c",
    "signer": "0x0444D342667207352B17fd469487F22596Bf0588",
    "userId": "2044"
  }
}