{
  "manageEntity": {
    "action": "Save",
    "entityId": "169332",
    "entityType": "Track",
    "nonce": "0x51609faa3498665f5b33d080e734cb0cfe592b7710c3457c6ada094dd48ec10f",
    "signature": "0x81dc2136ee47878b624c3d8196e80d642a473105a83b7e3937ceea83201914464d08e934ac085c7af15b394c0a7c98ba0743731521f7a87fe692264a22a8ec331c",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}