{
  "manageEntity": {
    "action": "Save",
    "entityId": "1805941130",
    "entityType": "Track",
    "nonce": "0x705f4320336699b585a5f02d89a7ecf207cb0a9bd0eb3fc5d6eac228cb55bc46",
    "signature": "0x8299d49e6c649421a478e3f8b056c88b2afff184e75ae380904e38ae970a2b7d7dd1be5806906e6157ce3cb534c510e5cd1ee885b9e1cec8a80069738e5b371c1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}