{
  "manageEntity": {
    "action": "Save",
    "entityId": "47422512",
    "entityType": "Track",
    "nonce": "1791478441921638894",
    "signature": "0x588ed662a908a883ca7ae44870311f433d2c900b96e2d9ec5b324d2b362bd3f901a5d8d7405349ee7064571c2303babe9520f45f0989a4736fee01da392667001c",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}