{
  "manageEntity": {
    "action": "Save",
    "entityId": "927876593",
    "entityType": "Track",
    "nonce": "0x234ae38e6528313600e572b1b864897ff07bfdc1a145b35aa2631d0e29423c39",
    "signature": "0x5f2fed84053fa9492797bd6dc859ab2a1e9e32c847e19dbafab03c2e9cb1597a202801cc83a1402212aca85d0623fff0ac4656c9a655465bf03ab0fc0d332d191b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}