{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059097",
    "entityType": "Track",
    "nonce": "0xeeac7d0c53ed4939912ffac9290465f7da2b1d5d7908d8eee0a242116ba5d942",
    "signature": "0x0f3344409c793efd9b4925213f3d62d85b0276959a983932ab806919a93d67b84b0f557875d1a72e748bfe1cb45dff7f4c83515eed0989e26644170e803612501b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}