{
  "manageEntity": {
    "action": "Save",
    "entityId": "77822976",
    "entityType": "Track",
    "nonce": "0xe11e34fa8cb1ba8ccbe3cb8b2f0c30da13dd85c0b07457ddf6d172b2f9d00cec",
    "signature": "0x9a3679adcb741970940bef0992f2b9e2ffc92f9b9557564dc710e152042ec50a10225786ae62f805db89410c512a66c03103eaa2645defc6fd6f43a1c42c652f1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}