{
  "manageEntity": {
    "action": "Save",
    "entityId": "623053210",
    "entityType": "Track",
    "nonce": "0x08f1013c8b841a2bee89deaed8dbaaed55aaae075873079948423edc93193ec5",
    "signature": "0x335496dfa6cec81398a66fe96e6f0cdcf878832c1debc94f43d0fed03854f0b101020fe96bce4c310da501248abb498782babe2b993551d917af26db3b4e7d9b1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}