{
  "manageEntity": {
    "action": "Save",
    "entityId": "59474887",
    "entityType": "Track",
    "nonce": "0xbf083be5e5a4ec26a82ffca1722026c6ccc972559102fce2dc04a31c97648842",
    "signature": "0xa3a3662be9dc8ca67f93b90010a1b277ebe44746248e72d744a98129722cfbe46e5bfe78afada7b81c517be807e4364e66f5d8779f5dbdd80c81ae5a05e4fb301c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}