{
  "manageEntity": {
    "action": "Save",
    "entityId": "1348583430",
    "entityType": "Track",
    "nonce": "0xc22b6e957864865ccd27d4f23421ff92e7eb368b50002d9e8693435d4b10b2f7",
    "signature": "0x0c61cd4c8e3b536d671a7b24b9ba586b73b804e0b93418c712ec635ac7e0e716208b71d67467b9184b90ad2787798cb4e440635b1b829c8577da9419b7ae62201b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}