{
  "manageEntity": {
    "action": "Save",
    "entityId": "1832514351",
    "entityType": "Track",
    "nonce": "1790151562270403257",
    "signature": "0x4418919ce5c2ebe05081b3c9b1a608eaf78343fd6a3fc91422aee13ec0f8731922caa202e9da2522013eeaa6024e95b8485588bb703e035672fdf6688d89d6611b",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}