{
  "manageEntity": {
    "action": "Save",
    "entityId": "1526218622",
    "entityType": "Track",
    "nonce": "0x03b60345d59fc06e6e48370d17e39a772cdec3acc2ce21b0e1d03c1c28703164",
    "signature": "0x6c073b29e256cd0a1e3911f30edce159a9e2a6fe3de578dcc42c331e1d0ac4890a5bbcf995bf32632bc808f14d919fee630ccc23cb4ace29c608f27d52bd83e51c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}