{
  "manageEntity": {
    "action": "Save",
    "entityId": "222119",
    "entityType": "Track",
    "nonce": "0xd09acddffe11f1333bed134429d4292839e524635b272a055228eac890155391",
    "signature": "0xc205c2790b6ecbf457d44d532205ed196a320a858eb5c6d8a5cb2559f42905635c2631895a74155a55a6e1e3a074dc7318839a6a8fd28ed15a99cad197f68da41c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}