{
  "manageEntity": {
    "action": "Save",
    "entityId": "299119735",
    "entityType": "Track",
    "nonce": "0xc2b8b45774df42a0973ff4f8822b1a92e78ce539c6ad6a7c454ab18cbaf4c760",
    "signature": "0x2d631215935ee3ae0dbd6d3059263dbf821ccb5a114d87d12e7347dfd7fbd4fa38276d6b88ed03e77329d20c7a3b80fcf2986c1ccfeb602b26838860028131711b",
    "signer": "0x9d71fCCB64e7575736E44460e714Ce0fcd69cf08",
    "userId": "16198441"
  }
}