{
  "manageEntity": {
    "action": "Save",
    "entityId": "1325141579",
    "entityType": "Track",
    "nonce": "0xa2c15bc8d4b829f67f798a15be56065b32a9449f94a4322844b5f2b6d9a14aa8",
    "signature": "0xdfb2e078587cdd970d50a5c60fb2e27c97a9c43f31db913e833376040e9d523e486a3d320e475b867e5e890fefb755cd3502fc318c14691cb90414d8cf38e8d21c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}