{
  "manageEntity": {
    "action": "Save",
    "entityId": "275075741",
    "entityType": "Track",
    "nonce": "0x266368d1f60dea6b4a7e091702f645d9dc59ac86a7b73840ac9e3bed9e682d9e",
    "signature": "0x8274734c6174b00ebc8c8269ed3d2d773302728f6c581b69feae9d84f96bc6a632d01f97cd87d6b8cbb6569b068d8c6e2891c35317ddda5ef8abae164ea822381c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}