{
  "manageEntity": {
    "action": "Save",
    "entityId": "1515648197",
    "entityType": "Track",
    "nonce": "0xb3a8b6eaf313c52465d9b4c2d01fd4c487f9eac16bbb4797d99f7ac0fcdec0f7",
    "signature": "0x158032a03f283fa7e52b462f739041b05f481ec6e7056a4f6ccea2ca1647305208b322854201162b820ea884a0dffc4f6751b13c548ddf4d3886f4d5adb9e6791b",
    "signer": "0x71CF13A0272e099ad4E22F4074EdB9Fd3b7be7b6",
    "userId": "824338411"
  }
}