{
  "manageEntity": {
    "action": "Save",
    "entityId": "2118789522",
    "entityType": "Track",
    "nonce": "0xa69f373afcd6590e7d7c8a244ba6a7e39d74913ae61b72e8abdf45bac94b4b62",
    "signature": "0x7eef17f10bd900aae885f21a71dfde890b89671490d56609184c8f165b5865b74584764439e362de20230098fe7089d07b33a8c1b4a2b2010d2fc2fba49dc79f1c",
    "signer": "0x95bc9101F0E3125Dab3b9e39ACc2b72eE7C8a02c",
    "userId": "380062588"
  }
}