{
  "manageEntity": {
    "action": "Save",
    "entityId": "315740120",
    "entityType": "Track",
    "nonce": "0x98abaf34fb5757789bd1b1aa9064407083720a5d6a9b8e64655eff1b6fb3ab7b",
    "signature": "0xaf573c2d611aa2838865db24a44bf815151ffe8245bc4d7841efea4871831c2945b8a193065ee7af6d2ece00f9d3f617a54c67db5815eeed2b1a50f7420ebe2c1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}