{
  "manageEntity": {
    "action": "Save",
    "entityId": "76770839",
    "entityType": "Track",
    "nonce": "0xde689e5891a2f74035000b868e5f593a24542ac739f1c5df5cb84072a305e3e2",
    "signature": "0x15c036a84981c7ca70128cf83474ed72b101e7f00f4cf0c1f7cdccb68267fd3c0eb39aaf0474688c28881b399cfb09220ca2a6187deca4d0872cdc72365d9da31b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}