{
  "manageEntity": {
    "action": "Save",
    "entityId": "1031958924",
    "entityType": "Track",
    "nonce": "0x9c7b8bd3c64070d1fba1c4294583a204b67684e13dfdf4ca10ca14c5f59977a9",
    "signature": "0x86ad41a3fbf275dc8266b9303825c4adc4a23b1383f881a0acaf61cec854fc690d363a8623bd6d8a671eac39e9c3ce3e87a0e30255ee678062f833ef0289806a1c",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}