{
  "manageEntity": {
    "action": "Save",
    "entityId": "161889552",
    "entityType": "Track",
    "nonce": "0x48ff6346f9f9bae3077796107aee938e1fef7df2e89b7a55fe0df6aa0af8a427",
    "signature": "0x3ee6bda483cd58d28254044de7f3d61681fb39333bd05fa9280447bfba94a6f1731f8231f366247699875d6cef0323183f238d6aec0d4bb2d9e1b7ec0aa86a761c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}