{
  "manageEntity": {
    "action": "Save",
    "entityId": "1344661093",
    "entityType": "Track",
    "nonce": "0x6f66bc164328e748dbcd5c57829133999452fe1f00e935f4667efa75130d6c90",
    "signature": "0x82df8bb5a7f3e880fa9dc68d9a2704b810b47059b21b755a0ef7e8f3a824dea47006552c967725b5df39076a2f1c309fb2ef7d14abd9c69b9f77d197a5dc09cc1c",
    "signer": "0x28945B345Dc8334c21B4e932dA506ca6Fac7e18a",
    "userId": "290283513"
  }
}