{
  "manageEntity": {
    "action": "Save",
    "entityId": "267889069",
    "entityType": "Track",
    "nonce": "0x09970b3d10a95e12be59cb8b75c6068c8f9c6610d0840806a94c62651fc68246",
    "signature": "0xc9017490062e1930a8bf0c0cb0d2c3aedeac17561147f84693b6389fe6afd1b3119883243382addf32925249c19311c3c18dbf8995f81973e8289b60be375be91b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}