{
  "manageEntity": {
    "action": "Save",
    "entityId": "719191887",
    "entityType": "Track",
    "nonce": "0x8169a0bbf6053babe3420d5fa105a63e01a718fdc45db15bb22cff337bc062d1",
    "signature": "0x03a3e99175eb1070aa3f6f99e720f14a66fe52e1a50877f440593a799edca85a2cd0abb76a5106a62f1b3f5f2761db8c6fc005a9fe2fe90f0405e5d8b34bddfc1c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}