{
  "manageEntity": {
    "action": "Save",
    "entityId": "86425994",
    "entityType": "Track",
    "nonce": "0x8c1f23857d0bfab0e548df2456f15cdc2e240047b58315c86ddcf8dd5b351b1e",
    "signature": "0xccbf50643528d154a497e5a40dac956f372af8e11420aced50a18eae89da11a95f6d8e163b0d19aac8f5c7ebc78a195c89dc26ebc101b336e5480c807b3123381b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}