{
  "manageEntity": {
    "action": "Save",
    "entityId": "730017",
    "entityType": "Track",
    "nonce": "0xf9ecc1ac317c5bfd57bc3cd62df2e20a91a7f75c028e8352dafdd3b8a6d7d9a1",
    "signature": "0x6204ea5065e9bcd9703d605af88ffb700516e91cd9f09910bb8abd90d51f4f6c4ff09d033a3b546d99a9e952a6f28e1ba99d6623081f2f82408657fd541a63a71b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}