{
  "manageEntity": {
    "action": "Save",
    "entityId": "1063074",
    "entityType": "Track",
    "nonce": "0x0d6d5ee41fec62adf2f91e826205c854f420576787350ee83d9cfa25090fcf74",
    "signature": "0x78e73564688bd2fa8acd90a11427929e0fe7e2cd7d4215408d40a06fd7156d4832430ab68cfa71b0faffb1dcfe4f23a2af34ea0b57e8630d9246430d953993431b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}