{
  "manageEntity": {
    "action": "Save",
    "entityId": "107340759",
    "entityType": "Track",
    "nonce": "0xf8929da3e55d71c7f428d4a798ce33f2c1e7c3796df74fd1d7f564f3c3dd7c7f",
    "signature": "0xedd15c90a783ee863afad0584842782ffd49b2119d6a06e50ae0c8c4e3f4b38664a92175f2dafd83265983d8600639add1d7e2951b627784504235d91c82028e1c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}