{
  "manageEntity": {
    "action": "Save",
    "entityId": "1835846624",
    "entityType": "Track",
    "nonce": "0x905a8a11c4af841aa0b69cb22781ab2b05531cc80d66f88b13db570d54018ee8",
    "signature": "0xd6f37a08608f27554babb4aa51fc9ed8f3e3591cca1e1470d058339aa4c0ee867887aed23370a4caa22832dd16d5fb548be0c88782e594011624e45c2e62903d1c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}