{
  "manageEntity": {
    "action": "Save",
    "entityId": "1016559579",
    "entityType": "Track",
    "nonce": "0x8a331d80972e02ca468db97eda3ce63bafb575262e713ca7e805ed03ec907b89",
    "signature": "0x9a7d347cc79179bb8f1045a936140882a0c92883da786bde439f56cf7bc022584c7202db7d7cbaad47afbf363594323cdc8ddbf56ea827acf010ddc3b7a2bd9e1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}